two version of R2R are hereHEADmaster

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diff --git a/.venv/lib/python3.12/site-packages/setuptools/_vendor/inflect/__init__.py b/.venv/lib/python3.12/site-packages/setuptools/_vendor/inflect/__init__.py
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+"""
+inflect: english language inflection
+ - correctly generate plurals, ordinals, indefinite articles
+ - convert numbers to words
+
+Copyright (C) 2010 Paul Dyson
+
+Based upon the Perl module
+`Lingua::EN::Inflect <https://metacpan.org/pod/Lingua::EN::Inflect>`_.
+
+methods:
+    classical inflect
+    plural plural_noun plural_verb plural_adj singular_noun no num a an
+    compare compare_nouns compare_verbs compare_adjs
+    present_participle
+    ordinal
+    number_to_words
+    join
+    defnoun defverb defadj defa defan
+
+INFLECTIONS:
+    classical inflect
+    plural plural_noun plural_verb plural_adj singular_noun compare
+    no num a an present_participle
+
+PLURALS:
+    classical inflect
+    plural plural_noun plural_verb plural_adj singular_noun no num
+    compare compare_nouns compare_verbs compare_adjs
+
+COMPARISONS:
+    classical
+    compare compare_nouns compare_verbs compare_adjs
+
+ARTICLES:
+    classical inflect num a an
+
+NUMERICAL:
+    ordinal number_to_words
+
+USER_DEFINED:
+    defnoun defverb defadj defa defan
+
+Exceptions:
+ UnknownClassicalModeError
+ BadNumValueError
+ BadChunkingOptionError
+ NumOutOfRangeError
+ BadUserDefinedPatternError
+ BadRcFileError
+ BadGenderError
+
+"""
+
+from __future__ import annotations
+
+import ast
+import collections
+import contextlib
+import functools
+import itertools
+import re
+from numbers import Number
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Callable,
+    Dict,
+    Iterable,
+    List,
+    Literal,
+    Match,
+    Optional,
+    Sequence,
+    Tuple,
+    Union,
+    cast,
+)
+
+from more_itertools import windowed_complete
+from typeguard import typechecked
+
+from .compat.py38 import Annotated
+
+
+class UnknownClassicalModeError(Exception):
+    pass
+
+
+class BadNumValueError(Exception):
+    pass
+
+
+class BadChunkingOptionError(Exception):
+    pass
+
+
+class NumOutOfRangeError(Exception):
+    pass
+
+
+class BadUserDefinedPatternError(Exception):
+    pass
+
+
+class BadRcFileError(Exception):
+    pass
+
+
+class BadGenderError(Exception):
+    pass
+
+
+def enclose(s: str) -> str:
+    return f"(?:{s})"
+
+
+def joinstem(cutpoint: Optional[int] = 0, words: Optional[Iterable[str]] = None) -> str:
+    """
+    Join stem of each word in words into a string for regex.
+
+    Each word is truncated at cutpoint.
+
+    Cutpoint is usually negative indicating the number of letters to remove
+    from the end of each word.
+
+    >>> joinstem(-2, ["ephemeris", "iris", ".*itis"])
+    '(?:ephemer|ir|.*it)'
+
+    >>> joinstem(None, ["ephemeris"])
+    '(?:ephemeris)'
+
+    >>> joinstem(5, None)
+    '(?:)'
+    """
+    return enclose("|".join(w[:cutpoint] for w in words or []))
+
+
+def bysize(words: Iterable[str]) -> Dict[int, set]:
+    """
+    From a list of words, return a dict of sets sorted by word length.
+
+    >>> words = ['ant', 'cat', 'dog', 'pig', 'frog', 'goat', 'horse', 'elephant']
+    >>> ret = bysize(words)
+    >>> sorted(ret[3])
+    ['ant', 'cat', 'dog', 'pig']
+    >>> ret[5]
+    {'horse'}
+    """
+    res: Dict[int, set] = collections.defaultdict(set)
+    for w in words:
+        res[len(w)].add(w)
+    return res
+
+
+def make_pl_si_lists(
+    lst: Iterable[str],
+    plending: str,
+    siendingsize: Optional[int],
+    dojoinstem: bool = True,
+):
+    """
+    given a list of singular words: lst
+
+    an ending to append to make the plural: plending
+
+    the number of characters to remove from the singular
+    before appending plending: siendingsize
+
+    a flag whether to create a joinstem: dojoinstem
+
+    return:
+    a list of pluralised words: si_list (called si because this is what you need to
+    look for to make the singular)
+
+    the pluralised words as a dict of sets sorted by word length: si_bysize
+    the singular words as a dict of sets sorted by word length: pl_bysize
+    if dojoinstem is True: a regular expression that matches any of the stems: stem
+    """
+    if siendingsize is not None:
+        siendingsize = -siendingsize
+    si_list = [w[:siendingsize] + plending for w in lst]
+    pl_bysize = bysize(lst)
+    si_bysize = bysize(si_list)
+    if dojoinstem:
+        stem = joinstem(siendingsize, lst)
+        return si_list, si_bysize, pl_bysize, stem
+    else:
+        return si_list, si_bysize, pl_bysize
+
+
+# 1. PLURALS
+
+pl_sb_irregular_s = {
+    "corpus": "corpuses|corpora",
+    "opus": "opuses|opera",
+    "genus": "genera",
+    "mythos": "mythoi",
+    "penis": "penises|penes",
+    "testis": "testes",
+    "atlas": "atlases|atlantes",
+    "yes": "yeses",
+}
+
+pl_sb_irregular = {
+    "child": "children",
+    "chili": "chilis|chilies",
+    "brother": "brothers|brethren",
+    "infinity": "infinities|infinity",
+    "loaf": "loaves",
+    "lore": "lores|lore",
+    "hoof": "hoofs|hooves",
+    "beef": "beefs|beeves",
+    "thief": "thiefs|thieves",
+    "money": "monies",
+    "mongoose": "mongooses",
+    "ox": "oxen",
+    "cow": "cows|kine",
+    "graffito": "graffiti",
+    "octopus": "octopuses|octopodes",
+    "genie": "genies|genii",
+    "ganglion": "ganglions|ganglia",
+    "trilby": "trilbys",
+    "turf": "turfs|turves",
+    "numen": "numina",
+    "atman": "atmas",
+    "occiput": "occiputs|occipita",
+    "sabretooth": "sabretooths",
+    "sabertooth": "sabertooths",
+    "lowlife": "lowlifes",
+    "flatfoot": "flatfoots",
+    "tenderfoot": "tenderfoots",
+    "romany": "romanies",
+    "jerry": "jerries",
+    "mary": "maries",
+    "talouse": "talouses",
+    "rom": "roma",
+    "carmen": "carmina",
+}
+
+pl_sb_irregular.update(pl_sb_irregular_s)
+# pl_sb_irregular_keys = enclose('|'.join(pl_sb_irregular.keys()))
+
+pl_sb_irregular_caps = {
+    "Romany": "Romanies",
+    "Jerry": "Jerrys",
+    "Mary": "Marys",
+    "Rom": "Roma",
+}
+
+pl_sb_irregular_compound = {"prima donna": "prima donnas|prime donne"}
+
+si_sb_irregular = {v: k for (k, v) in pl_sb_irregular.items()}
+for k in list(si_sb_irregular):
+    if "|" in k:
+        k1, k2 = k.split("|")
+        si_sb_irregular[k1] = si_sb_irregular[k2] = si_sb_irregular[k]
+        del si_sb_irregular[k]
+si_sb_irregular_caps = {v: k for (k, v) in pl_sb_irregular_caps.items()}
+si_sb_irregular_compound = {v: k for (k, v) in pl_sb_irregular_compound.items()}
+for k in list(si_sb_irregular_compound):
+    if "|" in k:
+        k1, k2 = k.split("|")
+        si_sb_irregular_compound[k1] = si_sb_irregular_compound[k2] = (
+            si_sb_irregular_compound[k]
+        )
+        del si_sb_irregular_compound[k]
+
+# si_sb_irregular_keys = enclose('|'.join(si_sb_irregular.keys()))
+
+# Z's that don't double
+
+pl_sb_z_zes_list = ("quartz", "topaz")
+pl_sb_z_zes_bysize = bysize(pl_sb_z_zes_list)
+
+pl_sb_ze_zes_list = ("snooze",)
+pl_sb_ze_zes_bysize = bysize(pl_sb_ze_zes_list)
+
+
+# CLASSICAL "..is" -> "..ides"
+
+pl_sb_C_is_ides_complete = [
+    # GENERAL WORDS...
+    "ephemeris",
+    "iris",
+    "clitoris",
+    "chrysalis",
+    "epididymis",
+]
+
+pl_sb_C_is_ides_endings = [
+    # INFLAMATIONS...
+    "itis"
+]
+
+pl_sb_C_is_ides = joinstem(
+    -2, pl_sb_C_is_ides_complete + [f".*{w}" for w in pl_sb_C_is_ides_endings]
+)
+
+pl_sb_C_is_ides_list = pl_sb_C_is_ides_complete + pl_sb_C_is_ides_endings
+
+(
+    si_sb_C_is_ides_list,
+    si_sb_C_is_ides_bysize,
+    pl_sb_C_is_ides_bysize,
+) = make_pl_si_lists(pl_sb_C_is_ides_list, "ides", 2, dojoinstem=False)
+
+
+# CLASSICAL "..a" -> "..ata"
+
+pl_sb_C_a_ata_list = (
+    "anathema",
+    "bema",
+    "carcinoma",
+    "charisma",
+    "diploma",
+    "dogma",
+    "drama",
+    "edema",
+    "enema",
+    "enigma",
+    "lemma",
+    "lymphoma",
+    "magma",
+    "melisma",
+    "miasma",
+    "oedema",
+    "sarcoma",
+    "schema",
+    "soma",
+    "stigma",
+    "stoma",
+    "trauma",
+    "gumma",
+    "pragma",
+)
+
+(
+    si_sb_C_a_ata_list,
+    si_sb_C_a_ata_bysize,
+    pl_sb_C_a_ata_bysize,
+    pl_sb_C_a_ata,
+) = make_pl_si_lists(pl_sb_C_a_ata_list, "ata", 1)
+
+# UNCONDITIONAL "..a" -> "..ae"
+
+pl_sb_U_a_ae_list = (
+    "alumna",
+    "alga",
+    "vertebra",
+    "persona",
+    "vita",
+)
+(
+    si_sb_U_a_ae_list,
+    si_sb_U_a_ae_bysize,
+    pl_sb_U_a_ae_bysize,
+    pl_sb_U_a_ae,
+) = make_pl_si_lists(pl_sb_U_a_ae_list, "e", None)
+
+# CLASSICAL "..a" -> "..ae"
+
+pl_sb_C_a_ae_list = (
+    "amoeba",
+    "antenna",
+    "formula",
+    "hyperbola",
+    "medusa",
+    "nebula",
+    "parabola",
+    "abscissa",
+    "hydra",
+    "nova",
+    "lacuna",
+    "aurora",
+    "umbra",
+    "flora",
+    "fauna",
+)
+(
+    si_sb_C_a_ae_list,
+    si_sb_C_a_ae_bysize,
+    pl_sb_C_a_ae_bysize,
+    pl_sb_C_a_ae,
+) = make_pl_si_lists(pl_sb_C_a_ae_list, "e", None)
+
+
+# CLASSICAL "..en" -> "..ina"
+
+pl_sb_C_en_ina_list = ("stamen", "foramen", "lumen")
+
+(
+    si_sb_C_en_ina_list,
+    si_sb_C_en_ina_bysize,
+    pl_sb_C_en_ina_bysize,
+    pl_sb_C_en_ina,
+) = make_pl_si_lists(pl_sb_C_en_ina_list, "ina", 2)
+
+
+# UNCONDITIONAL "..um" -> "..a"
+
+pl_sb_U_um_a_list = (
+    "bacterium",
+    "agendum",
+    "desideratum",
+    "erratum",
+    "stratum",
+    "datum",
+    "ovum",
+    "extremum",
+    "candelabrum",
+)
+(
+    si_sb_U_um_a_list,
+    si_sb_U_um_a_bysize,
+    pl_sb_U_um_a_bysize,
+    pl_sb_U_um_a,
+) = make_pl_si_lists(pl_sb_U_um_a_list, "a", 2)
+
+# CLASSICAL "..um" -> "..a"
+
+pl_sb_C_um_a_list = (
+    "maximum",
+    "minimum",
+    "momentum",
+    "optimum",
+    "quantum",
+    "cranium",
+    "curriculum",
+    "dictum",
+    "phylum",
+    "aquarium",
+    "compendium",
+    "emporium",
+    "encomium",
+    "gymnasium",
+    "honorarium",
+    "interregnum",
+    "lustrum",
+    "memorandum",
+    "millennium",
+    "rostrum",
+    "spectrum",
+    "speculum",
+    "stadium",
+    "trapezium",
+    "ultimatum",
+    "medium",
+    "vacuum",
+    "velum",
+    "consortium",
+    "arboretum",
+)
+
+(
+    si_sb_C_um_a_list,
+    si_sb_C_um_a_bysize,
+    pl_sb_C_um_a_bysize,
+    pl_sb_C_um_a,
+) = make_pl_si_lists(pl_sb_C_um_a_list, "a", 2)
+
+
+# UNCONDITIONAL "..us" -> "i"
+
+pl_sb_U_us_i_list = (
+    "alumnus",
+    "alveolus",
+    "bacillus",
+    "bronchus",
+    "locus",
+    "nucleus",
+    "stimulus",
+    "meniscus",
+    "sarcophagus",
+)
+(
+    si_sb_U_us_i_list,
+    si_sb_U_us_i_bysize,
+    pl_sb_U_us_i_bysize,
+    pl_sb_U_us_i,
+) = make_pl_si_lists(pl_sb_U_us_i_list, "i", 2)
+
+# CLASSICAL "..us" -> "..i"
+
+pl_sb_C_us_i_list = (
+    "focus",
+    "radius",
+    "genius",
+    "incubus",
+    "succubus",
+    "nimbus",
+    "fungus",
+    "nucleolus",
+    "stylus",
+    "torus",
+    "umbilicus",
+    "uterus",
+    "hippopotamus",
+    "cactus",
+)
+
+(
+    si_sb_C_us_i_list,
+    si_sb_C_us_i_bysize,
+    pl_sb_C_us_i_bysize,
+    pl_sb_C_us_i,
+) = make_pl_si_lists(pl_sb_C_us_i_list, "i", 2)
+
+
+# CLASSICAL "..us" -> "..us"  (ASSIMILATED 4TH DECLENSION LATIN NOUNS)
+
+pl_sb_C_us_us = (
+    "status",
+    "apparatus",
+    "prospectus",
+    "sinus",
+    "hiatus",
+    "impetus",
+    "plexus",
+)
+pl_sb_C_us_us_bysize = bysize(pl_sb_C_us_us)
+
+# UNCONDITIONAL "..on" -> "a"
+
+pl_sb_U_on_a_list = (
+    "criterion",
+    "perihelion",
+    "aphelion",
+    "phenomenon",
+    "prolegomenon",
+    "noumenon",
+    "organon",
+    "asyndeton",
+    "hyperbaton",
+)
+(
+    si_sb_U_on_a_list,
+    si_sb_U_on_a_bysize,
+    pl_sb_U_on_a_bysize,
+    pl_sb_U_on_a,
+) = make_pl_si_lists(pl_sb_U_on_a_list, "a", 2)
+
+# CLASSICAL "..on" -> "..a"
+
+pl_sb_C_on_a_list = ("oxymoron",)
+
+(
+    si_sb_C_on_a_list,
+    si_sb_C_on_a_bysize,
+    pl_sb_C_on_a_bysize,
+    pl_sb_C_on_a,
+) = make_pl_si_lists(pl_sb_C_on_a_list, "a", 2)
+
+
+# CLASSICAL "..o" -> "..i"  (BUT NORMALLY -> "..os")
+
+pl_sb_C_o_i = [
+    "solo",
+    "soprano",
+    "basso",
+    "alto",
+    "contralto",
+    "tempo",
+    "piano",
+    "virtuoso",
+]  # list not tuple so can concat for pl_sb_U_o_os
+
+pl_sb_C_o_i_bysize = bysize(pl_sb_C_o_i)
+si_sb_C_o_i_bysize = bysize([f"{w[:-1]}i" for w in pl_sb_C_o_i])
+
+pl_sb_C_o_i_stems = joinstem(-1, pl_sb_C_o_i)
+
+# ALWAYS "..o" -> "..os"
+
+pl_sb_U_o_os_complete = {"ado", "ISO", "NATO", "NCO", "NGO", "oto"}
+si_sb_U_o_os_complete = {f"{w}s" for w in pl_sb_U_o_os_complete}
+
+
+pl_sb_U_o_os_endings = [
+    "aficionado",
+    "aggro",
+    "albino",
+    "allegro",
+    "ammo",
+    "Antananarivo",
+    "archipelago",
+    "armadillo",
+    "auto",
+    "avocado",
+    "Bamako",
+    "Barquisimeto",
+    "bimbo",
+    "bingo",
+    "Biro",
+    "bolero",
+    "Bolzano",
+    "bongo",
+    "Boto",
+    "burro",
+    "Cairo",
+    "canto",
+    "cappuccino",
+    "casino",
+    "cello",
+    "Chicago",
+    "Chimango",
+    "cilantro",
+    "cochito",
+    "coco",
+    "Colombo",
+    "Colorado",
+    "commando",
+    "concertino",
+    "contango",
+    "credo",
+    "crescendo",
+    "cyano",
+    "demo",
+    "ditto",
+    "Draco",
+    "dynamo",
+    "embryo",
+    "Esperanto",
+    "espresso",
+    "euro",
+    "falsetto",
+    "Faro",
+    "fiasco",
+    "Filipino",
+    "flamenco",
+    "furioso",
+    "generalissimo",
+    "Gestapo",
+    "ghetto",
+    "gigolo",
+    "gizmo",
+    "Greensboro",
+    "gringo",
+    "Guaiabero",
+    "guano",
+    "gumbo",
+    "gyro",
+    "hairdo",
+    "hippo",
+    "Idaho",
+    "impetigo",
+    "inferno",
+    "info",
+    "intermezzo",
+    "intertrigo",
+    "Iquico",
+    "jumbo",
+    "junto",
+    "Kakapo",
+    "kilo",
+    "Kinkimavo",
+    "Kokako",
+    "Kosovo",
+    "Lesotho",
+    "libero",
+    "libido",
+    "libretto",
+    "lido",
+    "Lilo",
+    "limbo",
+    "limo",
+    "lineno",
+    "lingo",
+    "lino",
+    "livedo",
+    "loco",
+    "logo",
+    "lumbago",
+    "macho",
+    "macro",
+    "mafioso",
+    "magneto",
+    "magnifico",
+    "Majuro",
+    "Malabo",
+    "manifesto",
+    "Maputo",
+    "Maracaibo",
+    "medico",
+    "memo",
+    "metro",
+    "Mexico",
+    "micro",
+    "Milano",
+    "Monaco",
+    "mono",
+    "Montenegro",
+    "Morocco",
+    "Muqdisho",
+    "myo",
+    "neutrino",
+    "Ningbo",
+    "octavo",
+    "oregano",
+    "Orinoco",
+    "Orlando",
+    "Oslo",
+    "panto",
+    "Paramaribo",
+    "Pardusco",
+    "pedalo",
+    "photo",
+    "pimento",
+    "pinto",
+    "pleco",
+    "Pluto",
+    "pogo",
+    "polo",
+    "poncho",
+    "Porto-Novo",
+    "Porto",
+    "pro",
+    "psycho",
+    "pueblo",
+    "quarto",
+    "Quito",
+    "repo",
+    "rhino",
+    "risotto",
+    "rococo",
+    "rondo",
+    "Sacramento",
+    "saddo",
+    "sago",
+    "salvo",
+    "Santiago",
+    "Sapporo",
+    "Sarajevo",
+    "scherzando",
+    "scherzo",
+    "silo",
+    "sirocco",
+    "sombrero",
+    "staccato",
+    "sterno",
+    "stucco",
+    "stylo",
+    "sumo",
+    "Taiko",
+    "techno",
+    "terrazzo",
+    "testudo",
+    "timpano",
+    "tiro",
+    "tobacco",
+    "Togo",
+    "Tokyo",
+    "torero",
+    "Torino",
+    "Toronto",
+    "torso",
+    "tremolo",
+    "typo",
+    "tyro",
+    "ufo",
+    "UNESCO",
+    "vaquero",
+    "vermicello",
+    "verso",
+    "vibrato",
+    "violoncello",
+    "Virgo",
+    "weirdo",
+    "WHO",
+    "WTO",
+    "Yamoussoukro",
+    "yo-yo",
+    "zero",
+    "Zibo",
+] + pl_sb_C_o_i
+
+pl_sb_U_o_os_bysize = bysize(pl_sb_U_o_os_endings)
+si_sb_U_o_os_bysize = bysize([f"{w}s" for w in pl_sb_U_o_os_endings])
+
+
+# UNCONDITIONAL "..ch" -> "..chs"
+
+pl_sb_U_ch_chs_list = ("czech", "eunuch", "stomach")
+
+(
+    si_sb_U_ch_chs_list,
+    si_sb_U_ch_chs_bysize,
+    pl_sb_U_ch_chs_bysize,
+    pl_sb_U_ch_chs,
+) = make_pl_si_lists(pl_sb_U_ch_chs_list, "s", None)
+
+
+# UNCONDITIONAL "..[ei]x" -> "..ices"
+
+pl_sb_U_ex_ices_list = ("codex", "murex", "silex")
+(
+    si_sb_U_ex_ices_list,
+    si_sb_U_ex_ices_bysize,
+    pl_sb_U_ex_ices_bysize,
+    pl_sb_U_ex_ices,
+) = make_pl_si_lists(pl_sb_U_ex_ices_list, "ices", 2)
+
+pl_sb_U_ix_ices_list = ("radix", "helix")
+(
+    si_sb_U_ix_ices_list,
+    si_sb_U_ix_ices_bysize,
+    pl_sb_U_ix_ices_bysize,
+    pl_sb_U_ix_ices,
+) = make_pl_si_lists(pl_sb_U_ix_ices_list, "ices", 2)
+
+# CLASSICAL "..[ei]x" -> "..ices"
+
+pl_sb_C_ex_ices_list = (
+    "vortex",
+    "vertex",
+    "cortex",
+    "latex",
+    "pontifex",
+    "apex",
+    "index",
+    "simplex",
+)
+
+(
+    si_sb_C_ex_ices_list,
+    si_sb_C_ex_ices_bysize,
+    pl_sb_C_ex_ices_bysize,
+    pl_sb_C_ex_ices,
+) = make_pl_si_lists(pl_sb_C_ex_ices_list, "ices", 2)
+
+
+pl_sb_C_ix_ices_list = ("appendix",)
+
+(
+    si_sb_C_ix_ices_list,
+    si_sb_C_ix_ices_bysize,
+    pl_sb_C_ix_ices_bysize,
+    pl_sb_C_ix_ices,
+) = make_pl_si_lists(pl_sb_C_ix_ices_list, "ices", 2)
+
+
+# ARABIC: ".." -> "..i"
+
+pl_sb_C_i_list = ("afrit", "afreet", "efreet")
+
+(si_sb_C_i_list, si_sb_C_i_bysize, pl_sb_C_i_bysize, pl_sb_C_i) = make_pl_si_lists(
+    pl_sb_C_i_list, "i", None
+)
+
+
+# HEBREW: ".." -> "..im"
+
+pl_sb_C_im_list = ("goy", "seraph", "cherub")
+
+(si_sb_C_im_list, si_sb_C_im_bysize, pl_sb_C_im_bysize, pl_sb_C_im) = make_pl_si_lists(
+    pl_sb_C_im_list, "im", None
+)
+
+
+# UNCONDITIONAL "..man" -> "..mans"
+
+pl_sb_U_man_mans_list = """
+    ataman caiman cayman ceriman
+    desman dolman farman harman hetman
+    human leman ottoman shaman talisman
+""".split()
+pl_sb_U_man_mans_caps_list = """
+    Alabaman Bahaman Burman German
+    Hiroshiman Liman Nakayaman Norman Oklahoman
+    Panaman Roman Selman Sonaman Tacoman Yakiman
+    Yokohaman Yuman
+""".split()
+
+(
+    si_sb_U_man_mans_list,
+    si_sb_U_man_mans_bysize,
+    pl_sb_U_man_mans_bysize,
+) = make_pl_si_lists(pl_sb_U_man_mans_list, "s", None, dojoinstem=False)
+(
+    si_sb_U_man_mans_caps_list,
+    si_sb_U_man_mans_caps_bysize,
+    pl_sb_U_man_mans_caps_bysize,
+) = make_pl_si_lists(pl_sb_U_man_mans_caps_list, "s", None, dojoinstem=False)
+
+# UNCONDITIONAL "..louse" -> "..lice"
+pl_sb_U_louse_lice_list = ("booklouse", "grapelouse", "louse", "woodlouse")
+
+(
+    si_sb_U_louse_lice_list,
+    si_sb_U_louse_lice_bysize,
+    pl_sb_U_louse_lice_bysize,
+) = make_pl_si_lists(pl_sb_U_louse_lice_list, "lice", 5, dojoinstem=False)
+
+pl_sb_uninflected_s_complete = [
+    # PAIRS OR GROUPS SUBSUMED TO A SINGULAR...
+    "breeches",
+    "britches",
+    "pajamas",
+    "pyjamas",
+    "clippers",
+    "gallows",
+    "hijinks",
+    "headquarters",
+    "pliers",
+    "scissors",
+    "testes",
+    "herpes",
+    "pincers",
+    "shears",
+    "proceedings",
+    "trousers",
+    # UNASSIMILATED LATIN 4th DECLENSION
+    "cantus",
+    "coitus",
+    "nexus",
+    # RECENT IMPORTS...
+    "contretemps",
+    "corps",
+    "debris",
+    "siemens",
+    # DISEASES
+    "mumps",
+    # MISCELLANEOUS OTHERS...
+    "diabetes",
+    "jackanapes",
+    "series",
+    "species",
+    "subspecies",
+    "rabies",
+    "chassis",
+    "innings",
+    "news",
+    "mews",
+    "haggis",
+]
+
+pl_sb_uninflected_s_endings = [
+    # RECENT IMPORTS...
+    "ois",
+    # DISEASES
+    "measles",
+]
+
+pl_sb_uninflected_s = pl_sb_uninflected_s_complete + [
+    f".*{w}" for w in pl_sb_uninflected_s_endings
+]
+
+pl_sb_uninflected_herd = (
+    # DON'T INFLECT IN CLASSICAL MODE, OTHERWISE NORMAL INFLECTION
+    "wildebeest",
+    "swine",
+    "eland",
+    "bison",
+    "buffalo",
+    "cattle",
+    "elk",
+    "rhinoceros",
+    "zucchini",
+    "caribou",
+    "dace",
+    "grouse",
+    "guinea fowl",
+    "guinea-fowl",
+    "haddock",
+    "hake",
+    "halibut",
+    "herring",
+    "mackerel",
+    "pickerel",
+    "pike",
+    "roe",
+    "seed",
+    "shad",
+    "snipe",
+    "teal",
+    "turbot",
+    "water fowl",
+    "water-fowl",
+)
+
+pl_sb_uninflected_complete = [
+    # SOME FISH AND HERD ANIMALS
+    "tuna",
+    "salmon",
+    "mackerel",
+    "trout",
+    "bream",
+    "sea-bass",
+    "sea bass",
+    "carp",
+    "cod",
+    "flounder",
+    "whiting",
+    "moose",
+    # OTHER ODDITIES
+    "graffiti",
+    "djinn",
+    "samuri",
+    "offspring",
+    "pence",
+    "quid",
+    "hertz",
+] + pl_sb_uninflected_s_complete
+# SOME WORDS ENDING IN ...s (OFTEN PAIRS TAKEN AS A WHOLE)
+
+pl_sb_uninflected_caps = [
+    # ALL NATIONALS ENDING IN -ese
+    "Portuguese",
+    "Amoyese",
+    "Borghese",
+    "Congoese",
+    "Faroese",
+    "Foochowese",
+    "Genevese",
+    "Genoese",
+    "Gilbertese",
+    "Hottentotese",
+    "Kiplingese",
+    "Kongoese",
+    "Lucchese",
+    "Maltese",
+    "Nankingese",
+    "Niasese",
+    "Pekingese",
+    "Piedmontese",
+    "Pistoiese",
+    "Sarawakese",
+    "Shavese",
+    "Vermontese",
+    "Wenchowese",
+    "Yengeese",
+]
+
+
+pl_sb_uninflected_endings = [
+    # UNCOUNTABLE NOUNS
+    "butter",
+    "cash",
+    "furniture",
+    "information",
+    # SOME FISH AND HERD ANIMALS
+    "fish",
+    "deer",
+    "sheep",
+    # ALL NATIONALS ENDING IN -ese
+    "nese",
+    "rese",
+    "lese",
+    "mese",
+    # DISEASES
+    "pox",
+    # OTHER ODDITIES
+    "craft",
+] + pl_sb_uninflected_s_endings
+# SOME WORDS ENDING IN ...s (OFTEN PAIRS TAKEN AS A WHOLE)
+
+
+pl_sb_uninflected_bysize = bysize(pl_sb_uninflected_endings)
+
+
+# SINGULAR WORDS ENDING IN ...s (ALL INFLECT WITH ...es)
+
+pl_sb_singular_s_complete = [
+    "acropolis",
+    "aegis",
+    "alias",
+    "asbestos",
+    "bathos",
+    "bias",
+    "bronchitis",
+    "bursitis",
+    "caddis",
+    "cannabis",
+    "canvas",
+    "chaos",
+    "cosmos",
+    "dais",
+    "digitalis",
+    "epidermis",
+    "ethos",
+    "eyas",
+    "gas",
+    "glottis",
+    "hubris",
+    "ibis",
+    "lens",
+    "mantis",
+    "marquis",
+    "metropolis",
+    "pathos",
+    "pelvis",
+    "polis",
+    "rhinoceros",
+    "sassafras",
+    "trellis",
+] + pl_sb_C_is_ides_complete
+
+
+pl_sb_singular_s_endings = ["ss", "us"] + pl_sb_C_is_ides_endings
+
+pl_sb_singular_s_bysize = bysize(pl_sb_singular_s_endings)
+
+si_sb_singular_s_complete = [f"{w}es" for w in pl_sb_singular_s_complete]
+si_sb_singular_s_endings = [f"{w}es" for w in pl_sb_singular_s_endings]
+si_sb_singular_s_bysize = bysize(si_sb_singular_s_endings)
+
+pl_sb_singular_s_es = ["[A-Z].*es"]
+
+pl_sb_singular_s = enclose(
+    "|".join(
+        pl_sb_singular_s_complete
+        + [f".*{w}" for w in pl_sb_singular_s_endings]
+        + pl_sb_singular_s_es
+    )
+)
+
+
+# PLURALS ENDING IN uses -> use
+
+
+si_sb_ois_oi_case = ("Bolshois", "Hanois")
+
+si_sb_uses_use_case = ("Betelgeuses", "Duses", "Meuses", "Syracuses", "Toulouses")
+
+si_sb_uses_use = (
+    "abuses",
+    "applauses",
+    "blouses",
+    "carouses",
+    "causes",
+    "chartreuses",
+    "clauses",
+    "contuses",
+    "douses",
+    "excuses",
+    "fuses",
+    "grouses",
+    "hypotenuses",
+    "masseuses",
+    "menopauses",
+    "misuses",
+    "muses",
+    "overuses",
+    "pauses",
+    "peruses",
+    "profuses",
+    "recluses",
+    "reuses",
+    "ruses",
+    "souses",
+    "spouses",
+    "suffuses",
+    "transfuses",
+    "uses",
+)
+
+si_sb_ies_ie_case = (
+    "Addies",
+    "Aggies",
+    "Allies",
+    "Amies",
+    "Angies",
+    "Annies",
+    "Annmaries",
+    "Archies",
+    "Arties",
+    "Aussies",
+    "Barbies",
+    "Barries",
+    "Basies",
+    "Bennies",
+    "Bernies",
+    "Berties",
+    "Bessies",
+    "Betties",
+    "Billies",
+    "Blondies",
+    "Bobbies",
+    "Bonnies",
+    "Bowies",
+    "Brandies",
+    "Bries",
+    "Brownies",
+    "Callies",
+    "Carnegies",
+    "Carries",
+    "Cassies",
+    "Charlies",
+    "Cheries",
+    "Christies",
+    "Connies",
+    "Curies",
+    "Dannies",
+    "Debbies",
+    "Dixies",
+    "Dollies",
+    "Donnies",
+    "Drambuies",
+    "Eddies",
+    "Effies",
+    "Ellies",
+    "Elsies",
+    "Eries",
+    "Ernies",
+    "Essies",
+    "Eugenies",
+    "Fannies",
+    "Flossies",
+    "Frankies",
+    "Freddies",
+    "Gillespies",
+    "Goldies",
+    "Gracies",
+    "Guthries",
+    "Hallies",
+    "Hatties",
+    "Hetties",
+    "Hollies",
+    "Jackies",
+    "Jamies",
+    "Janies",
+    "Jannies",
+    "Jeanies",
+    "Jeannies",
+    "Jennies",
+    "Jessies",
+    "Jimmies",
+    "Jodies",
+    "Johnies",
+    "Johnnies",
+    "Josies",
+    "Julies",
+    "Kalgoorlies",
+    "Kathies",
+    "Katies",
+    "Kellies",
+    "Kewpies",
+    "Kristies",
+    "Laramies",
+    "Lassies",
+    "Lauries",
+    "Leslies",
+    "Lessies",
+    "Lillies",
+    "Lizzies",
+    "Lonnies",
+    "Lories",
+    "Lorries",
+    "Lotties",
+    "Louies",
+    "Mackenzies",
+    "Maggies",
+    "Maisies",
+    "Mamies",
+    "Marcies",
+    "Margies",
+    "Maries",
+    "Marjories",
+    "Matties",
+    "McKenzies",
+    "Melanies",
+    "Mickies",
+    "Millies",
+    "Minnies",
+    "Mollies",
+    "Mounties",
+    "Nannies",
+    "Natalies",
+    "Nellies",
+    "Netties",
+    "Ollies",
+    "Ozzies",
+    "Pearlies",
+    "Pottawatomies",
+    "Reggies",
+    "Richies",
+    "Rickies",
+    "Robbies",
+    "Ronnies",
+    "Rosalies",
+    "Rosemaries",
+    "Rosies",
+    "Roxies",
+    "Rushdies",
+    "Ruthies",
+    "Sadies",
+    "Sallies",
+    "Sammies",
+    "Scotties",
+    "Selassies",
+    "Sherries",
+    "Sophies",
+    "Stacies",
+    "Stefanies",
+    "Stephanies",
+    "Stevies",
+    "Susies",
+    "Sylvies",
+    "Tammies",
+    "Terries",
+    "Tessies",
+    "Tommies",
+    "Tracies",
+    "Trekkies",
+    "Valaries",
+    "Valeries",
+    "Valkyries",
+    "Vickies",
+    "Virgies",
+    "Willies",
+    "Winnies",
+    "Wylies",
+    "Yorkies",
+)
+
+si_sb_ies_ie = (
+    "aeries",
+    "baggies",
+    "belies",
+    "biggies",
+    "birdies",
+    "bogies",
+    "bonnies",
+    "boogies",
+    "bookies",
+    "bourgeoisies",
+    "brownies",
+    "budgies",
+    "caddies",
+    "calories",
+    "camaraderies",
+    "cockamamies",
+    "collies",
+    "cookies",
+    "coolies",
+    "cooties",
+    "coteries",
+    "crappies",
+    "curies",
+    "cutesies",
+    "dogies",
+    "eyries",
+    "floozies",
+    "footsies",
+    "freebies",
+    "genies",
+    "goalies",
+    "groupies",
+    "hies",
+    "jalousies",
+    "junkies",
+    "kiddies",
+    "laddies",
+    "lassies",
+    "lies",
+    "lingeries",
+    "magpies",
+    "menageries",
+    "mommies",
+    "movies",
+    "neckties",
+    "newbies",
+    "nighties",
+    "oldies",
+    "organdies",
+    "overlies",
+    "pies",
+    "pinkies",
+    "pixies",
+    "potpies",
+    "prairies",
+    "quickies",
+    "reveries",
+    "rookies",
+    "rotisseries",
+    "softies",
+    "sorties",
+    "species",
+    "stymies",
+    "sweeties",
+    "ties",
+    "underlies",
+    "unties",
+    "veggies",
+    "vies",
+    "yuppies",
+    "zombies",
+)
+
+
+si_sb_oes_oe_case = (
+    "Chloes",
+    "Crusoes",
+    "Defoes",
+    "Faeroes",
+    "Ivanhoes",
+    "Joes",
+    "McEnroes",
+    "Moes",
+    "Monroes",
+    "Noes",
+    "Poes",
+    "Roscoes",
+    "Tahoes",
+    "Tippecanoes",
+    "Zoes",
+)
+
+si_sb_oes_oe = (
+    "aloes",
+    "backhoes",
+    "canoes",
+    "does",
+    "floes",
+    "foes",
+    "hoes",
+    "mistletoes",
+    "oboes",
+    "pekoes",
+    "roes",
+    "sloes",
+    "throes",
+    "tiptoes",
+    "toes",
+    "woes",
+)
+
+si_sb_z_zes = ("quartzes", "topazes")
+
+si_sb_zzes_zz = ("buzzes", "fizzes", "frizzes", "razzes")
+
+si_sb_ches_che_case = (
+    "Andromaches",
+    "Apaches",
+    "Blanches",
+    "Comanches",
+    "Nietzsches",
+    "Porsches",
+    "Roches",
+)
+
+si_sb_ches_che = (
+    "aches",
+    "avalanches",
+    "backaches",
+    "bellyaches",
+    "caches",
+    "cloches",
+    "creches",
+    "douches",
+    "earaches",
+    "fiches",
+    "headaches",
+    "heartaches",
+    "microfiches",
+    "niches",
+    "pastiches",
+    "psyches",
+    "quiches",
+    "stomachaches",
+    "toothaches",
+    "tranches",
+)
+
+si_sb_xes_xe = ("annexes", "axes", "deluxes", "pickaxes")
+
+si_sb_sses_sse_case = ("Hesses", "Jesses", "Larousses", "Matisses")
+si_sb_sses_sse = (
+    "bouillabaisses",
+    "crevasses",
+    "demitasses",
+    "impasses",
+    "mousses",
+    "posses",
+)
+
+si_sb_ves_ve_case = (
+    # *[nwl]ives -> [nwl]live
+    "Clives",
+    "Palmolives",
+)
+si_sb_ves_ve = (
+    # *[^d]eaves -> eave
+    "interweaves",
+    "weaves",
+    # *[nwl]ives -> [nwl]live
+    "olives",
+    # *[eoa]lves -> [eoa]lve
+    "bivalves",
+    "dissolves",
+    "resolves",
+    "salves",
+    "twelves",
+    "valves",
+)
+
+
+plverb_special_s = enclose(
+    "|".join(
+        [pl_sb_singular_s]
+        + pl_sb_uninflected_s
+        + list(pl_sb_irregular_s)
+        + ["(.*[csx])is", "(.*)ceps", "[A-Z].*s"]
+    )
+)
+
+_pl_sb_postfix_adj_defn = (
+    ("general", enclose(r"(?!major|lieutenant|brigadier|adjutant|.*star)\S+")),
+    ("martial", enclose("court")),
+    ("force", enclose("pound")),
+)
+
+pl_sb_postfix_adj: Iterable[str] = (
+    enclose(val + f"(?=(?:-|\\s+){key})") for key, val in _pl_sb_postfix_adj_defn
+)
+
+pl_sb_postfix_adj_stems = f"({'|'.join(pl_sb_postfix_adj)})(.*)"
+
+
+# PLURAL WORDS ENDING IS es GO TO SINGULAR is
+
+si_sb_es_is = (
+    "amanuenses",
+    "amniocenteses",
+    "analyses",
+    "antitheses",
+    "apotheoses",
+    "arterioscleroses",
+    "atheroscleroses",
+    "axes",
+    # 'bases', # bases -> basis
+    "catalyses",
+    "catharses",
+    "chasses",
+    "cirrhoses",
+    "cocces",
+    "crises",
+    "diagnoses",
+    "dialyses",
+    "diereses",
+    "electrolyses",
+    "emphases",
+    "exegeses",
+    "geneses",
+    "halitoses",
+    "hydrolyses",
+    "hypnoses",
+    "hypotheses",
+    "hystereses",
+    "metamorphoses",
+    "metastases",
+    "misdiagnoses",
+    "mitoses",
+    "mononucleoses",
+    "narcoses",
+    "necroses",
+    "nemeses",
+    "neuroses",
+    "oases",
+    "osmoses",
+    "osteoporoses",
+    "paralyses",
+    "parentheses",
+    "parthenogeneses",
+    "periphrases",
+    "photosyntheses",
+    "probosces",
+    "prognoses",
+    "prophylaxes",
+    "prostheses",
+    "preces",
+    "psoriases",
+    "psychoanalyses",
+    "psychokineses",
+    "psychoses",
+    "scleroses",
+    "scolioses",
+    "sepses",
+    "silicoses",
+    "symbioses",
+    "synopses",
+    "syntheses",
+    "taxes",
+    "telekineses",
+    "theses",
+    "thromboses",
+    "tuberculoses",
+    "urinalyses",
+)
+
+pl_prep_list = """
+    about above across after among around at athwart before behind
+    below beneath beside besides between betwixt beyond but by
+    during except for from in into near of off on onto out over
+    since till to under until unto upon with""".split()
+
+pl_prep_list_da = pl_prep_list + ["de", "du", "da"]
+
+pl_prep_bysize = bysize(pl_prep_list_da)
+
+pl_prep = enclose("|".join(pl_prep_list_da))
+
+pl_sb_prep_dual_compound = rf"(.*?)((?:-|\s+)(?:{pl_prep})(?:-|\s+))a(?:-|\s+)(.*)"
+
+
+singular_pronoun_genders = {
+    "neuter",
+    "feminine",
+    "masculine",
+    "gender-neutral",
+    "feminine or masculine",
+    "masculine or feminine",
+}
+
+pl_pron_nom = {
+    # NOMINATIVE    REFLEXIVE
+    "i": "we",
+    "myself": "ourselves",
+    "you": "you",
+    "yourself": "yourselves",
+    "she": "they",
+    "herself": "themselves",
+    "he": "they",
+    "himself": "themselves",
+    "it": "they",
+    "itself": "themselves",
+    "they": "they",
+    "themself": "themselves",
+    #   POSSESSIVE
+    "mine": "ours",
+    "yours": "yours",
+    "hers": "theirs",
+    "his": "theirs",
+    "its": "theirs",
+    "theirs": "theirs",
+}
+
+si_pron: Dict[str, Dict[str, Union[str, Dict[str, str]]]] = {
+    "nom": {v: k for (k, v) in pl_pron_nom.items()}
+}
+si_pron["nom"]["we"] = "I"
+
+
+pl_pron_acc = {
+    # ACCUSATIVE    REFLEXIVE
+    "me": "us",
+    "myself": "ourselves",
+    "you": "you",
+    "yourself": "yourselves",
+    "her": "them",
+    "herself": "themselves",
+    "him": "them",
+    "himself": "themselves",
+    "it": "them",
+    "itself": "themselves",
+    "them": "them",
+    "themself": "themselves",
+}
+
+pl_pron_acc_keys = enclose("|".join(pl_pron_acc))
+pl_pron_acc_keys_bysize = bysize(pl_pron_acc)
+
+si_pron["acc"] = {v: k for (k, v) in pl_pron_acc.items()}
+
+for _thecase, _plur, _gend, _sing in (
+    ("nom", "they", "neuter", "it"),
+    ("nom", "they", "feminine", "she"),
+    ("nom", "they", "masculine", "he"),
+    ("nom", "they", "gender-neutral", "they"),
+    ("nom", "they", "feminine or masculine", "she or he"),
+    ("nom", "they", "masculine or feminine", "he or she"),
+    ("nom", "themselves", "neuter", "itself"),
+    ("nom", "themselves", "feminine", "herself"),
+    ("nom", "themselves", "masculine", "himself"),
+    ("nom", "themselves", "gender-neutral", "themself"),
+    ("nom", "themselves", "feminine or masculine", "herself or himself"),
+    ("nom", "themselves", "masculine or feminine", "himself or herself"),
+    ("nom", "theirs", "neuter", "its"),
+    ("nom", "theirs", "feminine", "hers"),
+    ("nom", "theirs", "masculine", "his"),
+    ("nom", "theirs", "gender-neutral", "theirs"),
+    ("nom", "theirs", "feminine or masculine", "hers or his"),
+    ("nom", "theirs", "masculine or feminine", "his or hers"),
+    ("acc", "them", "neuter", "it"),
+    ("acc", "them", "feminine", "her"),
+    ("acc", "them", "masculine", "him"),
+    ("acc", "them", "gender-neutral", "them"),
+    ("acc", "them", "feminine or masculine", "her or him"),
+    ("acc", "them", "masculine or feminine", "him or her"),
+    ("acc", "themselves", "neuter", "itself"),
+    ("acc", "themselves", "feminine", "herself"),
+    ("acc", "themselves", "masculine", "himself"),
+    ("acc", "themselves", "gender-neutral", "themself"),
+    ("acc", "themselves", "feminine or masculine", "herself or himself"),
+    ("acc", "themselves", "masculine or feminine", "himself or herself"),
+):
+    try:
+        si_pron[_thecase][_plur][_gend] = _sing  # type: ignore
+    except TypeError:
+        si_pron[_thecase][_plur] = {}
+        si_pron[_thecase][_plur][_gend] = _sing  # type: ignore
+
+
+si_pron_acc_keys = enclose("|".join(si_pron["acc"]))
+si_pron_acc_keys_bysize = bysize(si_pron["acc"])
+
+
+def get_si_pron(thecase, word, gender) -> str:
+    try:
+        sing = si_pron[thecase][word]
+    except KeyError:
+        raise  # not a pronoun
+    try:
+        return sing[gender]  # has several types due to gender
+    except TypeError:
+        return cast(str, sing)  # answer independent of gender
+
+
+# These dictionaries group verbs by first, second and third person
+# conjugations.
+
+plverb_irregular_pres = {
+    "am": "are",
+    "are": "are",
+    "is": "are",
+    "was": "were",
+    "were": "were",
+    "have": "have",
+    "has": "have",
+    "do": "do",
+    "does": "do",
+}
+
+plverb_ambiguous_pres = {
+    "act": "act",
+    "acts": "act",
+    "blame": "blame",
+    "blames": "blame",
+    "can": "can",
+    "must": "must",
+    "fly": "fly",
+    "flies": "fly",
+    "copy": "copy",
+    "copies": "copy",
+    "drink": "drink",
+    "drinks": "drink",
+    "fight": "fight",
+    "fights": "fight",
+    "fire": "fire",
+    "fires": "fire",
+    "like": "like",
+    "likes": "like",
+    "look": "look",
+    "looks": "look",
+    "make": "make",
+    "makes": "make",
+    "reach": "reach",
+    "reaches": "reach",
+    "run": "run",
+    "runs": "run",
+    "sink": "sink",
+    "sinks": "sink",
+    "sleep": "sleep",
+    "sleeps": "sleep",
+    "view": "view",
+    "views": "view",
+}
+
+plverb_ambiguous_pres_keys = re.compile(
+    rf"^({enclose('|'.join(plverb_ambiguous_pres))})((\s.*)?)$", re.IGNORECASE
+)
+
+
+plverb_irregular_non_pres = (
+    "did",
+    "had",
+    "ate",
+    "made",
+    "put",
+    "spent",
+    "fought",
+    "sank",
+    "gave",
+    "sought",
+    "shall",
+    "could",
+    "ought",
+    "should",
+)
+
+plverb_ambiguous_non_pres = re.compile(
+    r"^((?:thought|saw|bent|will|might|cut))((\s.*)?)$", re.IGNORECASE
+)
+
+# "..oes" -> "..oe" (the rest are "..oes" -> "o")
+
+pl_v_oes_oe = ("canoes", "floes", "oboes", "roes", "throes", "woes")
+pl_v_oes_oe_endings_size4 = ("hoes", "toes")
+pl_v_oes_oe_endings_size5 = ("shoes",)
+
+
+pl_count_zero = ("0", "no", "zero", "nil")
+
+
+pl_count_one = ("1", "a", "an", "one", "each", "every", "this", "that")
+
+pl_adj_special = {"a": "some", "an": "some", "this": "these", "that": "those"}
+
+pl_adj_special_keys = re.compile(
+    rf"^({enclose('|'.join(pl_adj_special))})$", re.IGNORECASE
+)
+
+pl_adj_poss = {
+    "my": "our",
+    "your": "your",
+    "its": "their",
+    "her": "their",
+    "his": "their",
+    "their": "their",
+}
+
+pl_adj_poss_keys = re.compile(rf"^({enclose('|'.join(pl_adj_poss))})$", re.IGNORECASE)
+
+
+# 2. INDEFINITE ARTICLES
+
+# THIS PATTERN MATCHES STRINGS OF CAPITALS STARTING WITH A "VOWEL-SOUND"
+# CONSONANT FOLLOWED BY ANOTHER CONSONANT, AND WHICH ARE NOT LIKELY
+# TO BE REAL WORDS (OH, ALL RIGHT THEN, IT'S JUST MAGIC!)
+
+A_abbrev = re.compile(
+    r"""
+^(?! FJO | [HLMNS]Y.  | RY[EO] | SQU
+  | ( F[LR]? | [HL] | MN? | N | RH? | S[CHKLMNPTVW]? | X(YL)?) [AEIOU])
+[FHLMNRSX][A-Z]
+""",
+    re.VERBOSE,
+)
+
+# THIS PATTERN CODES THE BEGINNINGS OF ALL ENGLISH WORDS BEGINING WITH A
+# 'y' FOLLOWED BY A CONSONANT. ANY OTHER Y-CONSONANT PREFIX THEREFORE
+# IMPLIES AN ABBREVIATION.
+
+A_y_cons = re.compile(r"^(y(b[lor]|cl[ea]|fere|gg|p[ios]|rou|tt))", re.IGNORECASE)
+
+# EXCEPTIONS TO EXCEPTIONS
+
+A_explicit_a = re.compile(r"^((?:unabomber|unanimous|US))", re.IGNORECASE)
+
+A_explicit_an = re.compile(
+    r"^((?:euler|hour(?!i)|heir|honest|hono[ur]|mpeg))", re.IGNORECASE
+)
+
+A_ordinal_an = re.compile(r"^([aefhilmnorsx]-?th)", re.IGNORECASE)
+
+A_ordinal_a = re.compile(r"^([bcdgjkpqtuvwyz]-?th)", re.IGNORECASE)
+
+
+# NUMERICAL INFLECTIONS
+
+nth = {
+    0: "th",
+    1: "st",
+    2: "nd",
+    3: "rd",
+    4: "th",
+    5: "th",
+    6: "th",
+    7: "th",
+    8: "th",
+    9: "th",
+    11: "th",
+    12: "th",
+    13: "th",
+}
+nth_suff = set(nth.values())
+
+ordinal = dict(
+    ty="tieth",
+    one="first",
+    two="second",
+    three="third",
+    five="fifth",
+    eight="eighth",
+    nine="ninth",
+    twelve="twelfth",
+)
+
+ordinal_suff = re.compile(rf"({'|'.join(ordinal)})\Z")
+
+
+# NUMBERS
+
+unit = ["", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
+teen = [
+    "ten",
+    "eleven",
+    "twelve",
+    "thirteen",
+    "fourteen",
+    "fifteen",
+    "sixteen",
+    "seventeen",
+    "eighteen",
+    "nineteen",
+]
+ten = [
+    "",
+    "",
+    "twenty",
+    "thirty",
+    "forty",
+    "fifty",
+    "sixty",
+    "seventy",
+    "eighty",
+    "ninety",
+]
+mill = [
+    " ",
+    " thousand",
+    " million",
+    " billion",
+    " trillion",
+    " quadrillion",
+    " quintillion",
+    " sextillion",
+    " septillion",
+    " octillion",
+    " nonillion",
+    " decillion",
+]
+
+
+# SUPPORT CLASSICAL PLURALIZATIONS
+
+def_classical = dict(
+    all=False, zero=False, herd=False, names=True, persons=False, ancient=False
+)
+
+all_classical = {k: True for k in def_classical}
+no_classical = {k: False for k in def_classical}
+
+
+# Maps strings to built-in constant types
+string_to_constant = {"True": True, "False": False, "None": None}
+
+
+# Pre-compiled regular expression objects
+DOLLAR_DIGITS = re.compile(r"\$(\d+)")
+FUNCTION_CALL = re.compile(r"((\w+)\([^)]*\)*)", re.IGNORECASE)
+PARTITION_WORD = re.compile(r"\A(\s*)(.+?)(\s*)\Z")
+PL_SB_POSTFIX_ADJ_STEMS_RE = re.compile(
+    rf"^(?:{pl_sb_postfix_adj_stems})$", re.IGNORECASE
+)
+PL_SB_PREP_DUAL_COMPOUND_RE = re.compile(
+    rf"^(?:{pl_sb_prep_dual_compound})$", re.IGNORECASE
+)
+DENOMINATOR = re.compile(r"(?P<denominator>.+)( (per|a) .+)")
+PLVERB_SPECIAL_S_RE = re.compile(rf"^({plverb_special_s})$")
+WHITESPACE = re.compile(r"\s")
+ENDS_WITH_S = re.compile(r"^(.*[^s])s$", re.IGNORECASE)
+ENDS_WITH_APOSTROPHE_S = re.compile(r"^(.*)'s?$")
+INDEFINITE_ARTICLE_TEST = re.compile(r"\A(\s*)(?:an?\s+)?(.+?)(\s*)\Z", re.IGNORECASE)
+SPECIAL_AN = re.compile(r"^[aefhilmnorsx]$", re.IGNORECASE)
+SPECIAL_A = re.compile(r"^[bcdgjkpqtuvwyz]$", re.IGNORECASE)
+SPECIAL_ABBREV_AN = re.compile(r"^[aefhilmnorsx][.-]", re.IGNORECASE)
+SPECIAL_ABBREV_A = re.compile(r"^[a-z][.-]", re.IGNORECASE)
+CONSONANTS = re.compile(r"^[^aeiouy]", re.IGNORECASE)
+ARTICLE_SPECIAL_EU = re.compile(r"^e[uw]", re.IGNORECASE)
+ARTICLE_SPECIAL_ONCE = re.compile(r"^onc?e\b", re.IGNORECASE)
+ARTICLE_SPECIAL_ONETIME = re.compile(r"^onetime\b", re.IGNORECASE)
+ARTICLE_SPECIAL_UNIT = re.compile(r"^uni([^nmd]|mo)", re.IGNORECASE)
+ARTICLE_SPECIAL_UBA = re.compile(r"^u[bcfghjkqrst][aeiou]", re.IGNORECASE)
+ARTICLE_SPECIAL_UKR = re.compile(r"^ukr", re.IGNORECASE)
+SPECIAL_CAPITALS = re.compile(r"^U[NK][AIEO]?")
+VOWELS = re.compile(r"^[aeiou]", re.IGNORECASE)
+
+DIGIT_GROUP = re.compile(r"(\d)")
+TWO_DIGITS = re.compile(r"(\d)(\d)")
+THREE_DIGITS = re.compile(r"(\d)(\d)(\d)")
+THREE_DIGITS_WORD = re.compile(r"(\d)(\d)(\d)(?=\D*\Z)")
+TWO_DIGITS_WORD = re.compile(r"(\d)(\d)(?=\D*\Z)")
+ONE_DIGIT_WORD = re.compile(r"(\d)(?=\D*\Z)")
+
+FOUR_DIGIT_COMMA = re.compile(r"(\d)(\d{3}(?:,|\Z))")
+NON_DIGIT = re.compile(r"\D")
+WHITESPACES_COMMA = re.compile(r"\s+,")
+COMMA_WORD = re.compile(r", (\S+)\s+\Z")
+WHITESPACES = re.compile(r"\s+")
+
+
+PRESENT_PARTICIPLE_REPLACEMENTS = (
+    (re.compile(r"ie$"), r"y"),
+    (
+        re.compile(r"ue$"),
+        r"u",
+    ),  # TODO: isn't ue$ -> u encompassed in the following rule?
+    (re.compile(r"([auy])e$"), r"\g<1>"),
+    (re.compile(r"ski$"), r"ski"),
+    (re.compile(r"[^b]i$"), r""),
+    (re.compile(r"^(are|were)$"), r"be"),
+    (re.compile(r"^(had)$"), r"hav"),
+    (re.compile(r"^(hoe)$"), r"\g<1>"),
+    (re.compile(r"([^e])e$"), r"\g<1>"),
+    (re.compile(r"er$"), r"er"),
+    (re.compile(r"([^aeiou][aeiouy]([bdgmnprst]))$"), r"\g<1>\g<2>"),
+)
+
+DIGIT = re.compile(r"\d")
+
+
+class Words(str):
+    lowered: str
+    split_: List[str]
+    first: str
+    last: str
+
+    def __init__(self, orig) -> None:
+        self.lowered = self.lower()
+        self.split_ = self.split()
+        self.first = self.split_[0]
+        self.last = self.split_[-1]
+
+
+Falsish = Any  # ideally, falsish would only validate on bool(value) is False
+
+
+_STATIC_TYPE_CHECKING = TYPE_CHECKING
+# ^-- Workaround for typeguard AST manipulation:
+#     https://github.com/agronholm/typeguard/issues/353#issuecomment-1556306554
+
+if _STATIC_TYPE_CHECKING:  # pragma: no cover
+    Word = Annotated[str, "String with at least 1 character"]
+else:
+
+    class _WordMeta(type):  # Too dynamic to be supported by mypy...
+        def __instancecheck__(self, instance: Any) -> bool:
+            return isinstance(instance, str) and len(instance) >= 1
+
+    class Word(metaclass=_WordMeta):  # type: ignore[no-redef]
+        """String with at least 1 character"""
+
+
+class engine:
+    def __init__(self) -> None:
+        self.classical_dict = def_classical.copy()
+        self.persistent_count: Optional[int] = None
+        self.mill_count = 0
+        self.pl_sb_user_defined: List[Optional[Word]] = []
+        self.pl_v_user_defined: List[Optional[Word]] = []
+        self.pl_adj_user_defined: List[Optional[Word]] = []
+        self.si_sb_user_defined: List[Optional[Word]] = []
+        self.A_a_user_defined: List[Optional[Word]] = []
+        self.thegender = "neuter"
+        self.__number_args: Optional[Dict[str, str]] = None
+
+    @property
+    def _number_args(self):
+        return cast(Dict[str, str], self.__number_args)
+
+    @_number_args.setter
+    def _number_args(self, val):
+        self.__number_args = val
+
+    @typechecked
+    def defnoun(self, singular: Optional[Word], plural: Optional[Word]) -> int:
+        """
+        Set the noun plural of singular to plural.
+
+        """
+        self.checkpat(singular)
+        self.checkpatplural(plural)
+        self.pl_sb_user_defined.extend((singular, plural))
+        self.si_sb_user_defined.extend((plural, singular))
+        return 1
+
+    @typechecked
+    def defverb(
+        self,
+        s1: Optional[Word],
+        p1: Optional[Word],
+        s2: Optional[Word],
+        p2: Optional[Word],
+        s3: Optional[Word],
+        p3: Optional[Word],
+    ) -> int:
+        """
+        Set the verb plurals for s1, s2 and s3 to p1, p2 and p3 respectively.
+
+        Where 1, 2 and 3 represent the 1st, 2nd and 3rd person forms of the verb.
+
+        """
+        self.checkpat(s1)
+        self.checkpat(s2)
+        self.checkpat(s3)
+        self.checkpatplural(p1)
+        self.checkpatplural(p2)
+        self.checkpatplural(p3)
+        self.pl_v_user_defined.extend((s1, p1, s2, p2, s3, p3))
+        return 1
+
+    @typechecked
+    def defadj(self, singular: Optional[Word], plural: Optional[Word]) -> int:
+        """
+        Set the adjective plural of singular to plural.
+
+        """
+        self.checkpat(singular)
+        self.checkpatplural(plural)
+        self.pl_adj_user_defined.extend((singular, plural))
+        return 1
+
+    @typechecked
+    def defa(self, pattern: Optional[Word]) -> int:
+        """
+        Define the indefinite article as 'a' for words matching pattern.
+
+        """
+        self.checkpat(pattern)
+        self.A_a_user_defined.extend((pattern, "a"))
+        return 1
+
+    @typechecked
+    def defan(self, pattern: Optional[Word]) -> int:
+        """
+        Define the indefinite article as 'an' for words matching pattern.
+
+        """
+        self.checkpat(pattern)
+        self.A_a_user_defined.extend((pattern, "an"))
+        return 1
+
+    def checkpat(self, pattern: Optional[Word]) -> None:
+        """
+        check for errors in a regex pattern
+        """
+        if pattern is None:
+            return
+        try:
+            re.match(pattern, "")
+        except re.error as err:
+            raise BadUserDefinedPatternError(pattern) from err
+
+    def checkpatplural(self, pattern: Optional[Word]) -> None:
+        """
+        check for errors in a regex replace pattern
+        """
+        return
+
+    @typechecked
+    def ud_match(self, word: Word, wordlist: Sequence[Optional[Word]]) -> Optional[str]:
+        for i in range(len(wordlist) - 2, -2, -2):  # backwards through even elements
+            mo = re.search(rf"^{wordlist[i]}$", word, re.IGNORECASE)
+            if mo:
+                if wordlist[i + 1] is None:
+                    return None
+                pl = DOLLAR_DIGITS.sub(
+                    r"\\1", cast(Word, wordlist[i + 1])
+                )  # change $n to \n for expand
+                return mo.expand(pl)
+        return None
+
+    def classical(self, **kwargs) -> None:
+        """
+        turn classical mode on and off for various categories
+
+        turn on all classical modes:
+        classical()
+        classical(all=True)
+
+        turn on or off specific claassical modes:
+        e.g.
+        classical(herd=True)
+        classical(names=False)
+
+        By default all classical modes are off except names.
+
+        unknown value in args or key in kwargs raises
+        exception: UnknownClasicalModeError
+
+        """
+        if not kwargs:
+            self.classical_dict = all_classical.copy()
+            return
+        if "all" in kwargs:
+            if kwargs["all"]:
+                self.classical_dict = all_classical.copy()
+            else:
+                self.classical_dict = no_classical.copy()
+
+        for k, v in kwargs.items():
+            if k in def_classical:
+                self.classical_dict[k] = v
+            else:
+                raise UnknownClassicalModeError
+
+    def num(
+        self, count: Optional[int] = None, show: Optional[int] = None
+    ) -> str:  # (;$count,$show)
+        """
+        Set the number to be used in other method calls.
+
+        Returns count.
+
+        Set show to False to return '' instead.
+
+        """
+        if count is not None:
+            try:
+                self.persistent_count = int(count)
+            except ValueError as err:
+                raise BadNumValueError from err
+            if (show is None) or show:
+                return str(count)
+        else:
+            self.persistent_count = None
+        return ""
+
+    def gender(self, gender: str) -> None:
+        """
+        set the gender for the singular of plural pronouns
+
+        can be one of:
+        'neuter'                ('they' -> 'it')
+        'feminine'              ('they' -> 'she')
+        'masculine'             ('they' -> 'he')
+        'gender-neutral'        ('they' -> 'they')
+        'feminine or masculine' ('they' -> 'she or he')
+        'masculine or feminine' ('they' -> 'he or she')
+        """
+        if gender in singular_pronoun_genders:
+            self.thegender = gender
+        else:
+            raise BadGenderError
+
+    def _get_value_from_ast(self, obj):
+        """
+        Return the value of the ast object.
+        """
+        if isinstance(obj, ast.Num):
+            return obj.n
+        elif isinstance(obj, ast.Str):
+            return obj.s
+        elif isinstance(obj, ast.List):
+            return [self._get_value_from_ast(e) for e in obj.elts]
+        elif isinstance(obj, ast.Tuple):
+            return tuple([self._get_value_from_ast(e) for e in obj.elts])
+
+        # None, True and False are NameConstants in Py3.4 and above.
+        elif isinstance(obj, ast.NameConstant):
+            return obj.value
+
+        # Probably passed a variable name.
+        # Or passed a single word without wrapping it in quotes as an argument
+        # ex: p.inflect("I plural(see)") instead of p.inflect("I plural('see')")
+        raise NameError(f"name '{obj.id}' is not defined")
+
+    def _string_to_substitute(
+        self, mo: Match, methods_dict: Dict[str, Callable]
+    ) -> str:
+        """
+        Return the string to be substituted for the match.
+        """
+        matched_text, f_name = mo.groups()
+        # matched_text is the complete match string. e.g. plural_noun(cat)
+        # f_name is the function name. e.g. plural_noun
+
+        # Return matched_text if function name is not in methods_dict
+        if f_name not in methods_dict:
+            return matched_text
+
+        # Parse the matched text
+        a_tree = ast.parse(matched_text)
+
+        # get the args and kwargs from ast objects
+        args_list = [
+            self._get_value_from_ast(a)
+            for a in a_tree.body[0].value.args  # type: ignore[attr-defined]
+        ]
+        kwargs_list = {
+            kw.arg: self._get_value_from_ast(kw.value)
+            for kw in a_tree.body[0].value.keywords  # type: ignore[attr-defined]
+        }
+
+        # Call the corresponding function
+        return methods_dict[f_name](*args_list, **kwargs_list)
+
+    # 0. PERFORM GENERAL INFLECTIONS IN A STRING
+
+    @typechecked
+    def inflect(self, text: Word) -> str:
+        """
+        Perform inflections in a string.
+
+        e.g. inflect('The plural of cat is plural(cat)') returns
+        'The plural of cat is cats'
+
+        can use plural, plural_noun, plural_verb, plural_adj,
+        singular_noun, a, an, no, ordinal, number_to_words,
+        and prespart
+
+        """
+        save_persistent_count = self.persistent_count
+
+        # Dictionary of allowed methods
+        methods_dict: Dict[str, Callable] = {
+            "plural": self.plural,
+            "plural_adj": self.plural_adj,
+            "plural_noun": self.plural_noun,
+            "plural_verb": self.plural_verb,
+            "singular_noun": self.singular_noun,
+            "a": self.a,
+            "an": self.a,
+            "no": self.no,
+            "ordinal": self.ordinal,
+            "number_to_words": self.number_to_words,
+            "present_participle": self.present_participle,
+            "num": self.num,
+        }
+
+        # Regular expression to find Python's function call syntax
+        output = FUNCTION_CALL.sub(
+            lambda mo: self._string_to_substitute(mo, methods_dict), text
+        )
+        self.persistent_count = save_persistent_count
+        return output
+
+    # ## PLURAL SUBROUTINES
+
+    def postprocess(self, orig: str, inflected) -> str:
+        inflected = str(inflected)
+        if "|" in inflected:
+            word_options = inflected.split("|")
+            # When two parts of a noun need to be pluralized
+            if len(word_options[0].split(" ")) == len(word_options[1].split(" ")):
+                result = inflected.split("|")[self.classical_dict["all"]].split(" ")
+            # When only the last part of the noun needs to be pluralized
+            else:
+                result = inflected.split(" ")
+                for index, word in enumerate(result):
+                    if "|" in word:
+                        result[index] = word.split("|")[self.classical_dict["all"]]
+        else:
+            result = inflected.split(" ")
+
+        # Try to fix word wise capitalization
+        for index, word in enumerate(orig.split(" ")):
+            if word == "I":
+                # Is this the only word for exceptions like this
+                # Where the original is fully capitalized
+                # without 'meaning' capitalization?
+                # Also this fails to handle a capitalizaion in context
+                continue
+            if word.capitalize() == word:
+                result[index] = result[index].capitalize()
+            if word == word.upper():
+                result[index] = result[index].upper()
+        return " ".join(result)
+
+    def partition_word(self, text: str) -> Tuple[str, str, str]:
+        mo = PARTITION_WORD.search(text)
+        if mo:
+            return mo.group(1), mo.group(2), mo.group(3)
+        else:
+            return "", "", ""
+
+    @typechecked
+    def plural(self, text: Word, count: Optional[Union[str, int, Any]] = None) -> str:
+        """
+        Return the plural of text.
+
+        If count supplied, then return text if count is one of:
+            1, a, an, one, each, every, this, that
+
+        otherwise return the plural.
+
+        Whitespace at the start and end is preserved.
+
+        """
+        pre, word, post = self.partition_word(text)
+        if not word:
+            return text
+        plural = self.postprocess(
+            word,
+            self._pl_special_adjective(word, count)
+            or self._pl_special_verb(word, count)
+            or self._plnoun(word, count),
+        )
+        return f"{pre}{plural}{post}"
+
+    @typechecked
+    def plural_noun(
+        self, text: Word, count: Optional[Union[str, int, Any]] = None
+    ) -> str:
+        """
+        Return the plural of text, where text is a noun.
+
+        If count supplied, then return text if count is one of:
+            1, a, an, one, each, every, this, that
+
+        otherwise return the plural.
+
+        Whitespace at the start and end is preserved.
+
+        """
+        pre, word, post = self.partition_word(text)
+        if not word:
+            return text
+        plural = self.postprocess(word, self._plnoun(word, count))
+        return f"{pre}{plural}{post}"
+
+    @typechecked
+    def plural_verb(
+        self, text: Word, count: Optional[Union[str, int, Any]] = None
+    ) -> str:
+        """
+        Return the plural of text, where text is a verb.
+
+        If count supplied, then return text if count is one of:
+            1, a, an, one, each, every, this, that
+
+        otherwise return the plural.
+
+        Whitespace at the start and end is preserved.
+
+        """
+        pre, word, post = self.partition_word(text)
+        if not word:
+            return text
+        plural = self.postprocess(
+            word,
+            self._pl_special_verb(word, count) or self._pl_general_verb(word, count),
+        )
+        return f"{pre}{plural}{post}"
+
+    @typechecked
+    def plural_adj(
+        self, text: Word, count: Optional[Union[str, int, Any]] = None
+    ) -> str:
+        """
+        Return the plural of text, where text is an adjective.
+
+        If count supplied, then return text if count is one of:
+            1, a, an, one, each, every, this, that
+
+        otherwise return the plural.
+
+        Whitespace at the start and end is preserved.
+
+        """
+        pre, word, post = self.partition_word(text)
+        if not word:
+            return text
+        plural = self.postprocess(word, self._pl_special_adjective(word, count) or word)
+        return f"{pre}{plural}{post}"
+
+    @typechecked
+    def compare(self, word1: Word, word2: Word) -> Union[str, bool]:
+        """
+        compare word1 and word2 for equality regardless of plurality
+
+        return values:
+        eq - the strings are equal
+        p:s - word1 is the plural of word2
+        s:p - word2 is the plural of word1
+        p:p - word1 and word2 are two different plural forms of the one word
+        False - otherwise
+
+        >>> compare = engine().compare
+        >>> compare("egg", "eggs")
+        's:p'
+        >>> compare('egg', 'egg')
+        'eq'
+
+        Words should not be empty.
+
+        >>> compare('egg', '')
+        Traceback (most recent call last):
+        ...
+        typeguard.TypeCheckError:...is not an instance of inflect.Word
+        """
+        norms = self.plural_noun, self.plural_verb, self.plural_adj
+        results = (self._plequal(word1, word2, norm) for norm in norms)
+        return next(filter(None, results), False)
+
+    @typechecked
+    def compare_nouns(self, word1: Word, word2: Word) -> Union[str, bool]:
+        """
+        compare word1 and word2 for equality regardless of plurality
+        word1 and word2 are to be treated as nouns
+
+        return values:
+        eq - the strings are equal
+        p:s - word1 is the plural of word2
+        s:p - word2 is the plural of word1
+        p:p - word1 and word2 are two different plural forms of the one word
+        False - otherwise
+
+        """
+        return self._plequal(word1, word2, self.plural_noun)
+
+    @typechecked
+    def compare_verbs(self, word1: Word, word2: Word) -> Union[str, bool]:
+        """
+        compare word1 and word2 for equality regardless of plurality
+        word1 and word2 are to be treated as verbs
+
+        return values:
+        eq - the strings are equal
+        p:s - word1 is the plural of word2
+        s:p - word2 is the plural of word1
+        p:p - word1 and word2 are two different plural forms of the one word
+        False - otherwise
+
+        """
+        return self._plequal(word1, word2, self.plural_verb)
+
+    @typechecked
+    def compare_adjs(self, word1: Word, word2: Word) -> Union[str, bool]:
+        """
+        compare word1 and word2 for equality regardless of plurality
+        word1 and word2 are to be treated as adjectives
+
+        return values:
+        eq - the strings are equal
+        p:s - word1 is the plural of word2
+        s:p - word2 is the plural of word1
+        p:p - word1 and word2 are two different plural forms of the one word
+        False - otherwise
+
+        """
+        return self._plequal(word1, word2, self.plural_adj)
+
+    @typechecked
+    def singular_noun(
+        self,
+        text: Word,
+        count: Optional[Union[int, str, Any]] = None,
+        gender: Optional[str] = None,
+    ) -> Union[str, Literal[False]]:
+        """
+        Return the singular of text, where text is a plural noun.
+
+        If count supplied, then return the singular if count is one of:
+            1, a, an, one, each, every, this, that or if count is None
+
+        otherwise return text unchanged.
+
+        Whitespace at the start and end is preserved.
+
+        >>> p = engine()
+        >>> p.singular_noun('horses')
+        'horse'
+        >>> p.singular_noun('knights')
+        'knight'
+
+        Returns False when a singular noun is passed.
+
+        >>> p.singular_noun('horse')
+        False
+        >>> p.singular_noun('knight')
+        False
+        >>> p.singular_noun('soldier')
+        False
+
+        """
+        pre, word, post = self.partition_word(text)
+        if not word:
+            return text
+        sing = self._sinoun(word, count=count, gender=gender)
+        if sing is not False:
+            plural = self.postprocess(word, sing)
+            return f"{pre}{plural}{post}"
+        return False
+
+    def _plequal(self, word1: str, word2: str, pl) -> Union[str, bool]:  # noqa: C901
+        classval = self.classical_dict.copy()
+        self.classical_dict = all_classical.copy()
+        if word1 == word2:
+            return "eq"
+        if word1 == pl(word2):
+            return "p:s"
+        if pl(word1) == word2:
+            return "s:p"
+        self.classical_dict = no_classical.copy()
+        if word1 == pl(word2):
+            return "p:s"
+        if pl(word1) == word2:
+            return "s:p"
+        self.classical_dict = classval.copy()
+
+        if pl == self.plural or pl == self.plural_noun:
+            if self._pl_check_plurals_N(word1, word2):
+                return "p:p"
+            if self._pl_check_plurals_N(word2, word1):
+                return "p:p"
+        if pl == self.plural or pl == self.plural_adj:
+            if self._pl_check_plurals_adj(word1, word2):
+                return "p:p"
+        return False
+
+    def _pl_reg_plurals(self, pair: str, stems: str, end1: str, end2: str) -> bool:
+        pattern = rf"({stems})({end1}\|\1{end2}|{end2}\|\1{end1})"
+        return bool(re.search(pattern, pair))
+
+    def _pl_check_plurals_N(self, word1: str, word2: str) -> bool:
+        stem_endings = (
+            (pl_sb_C_a_ata, "as", "ata"),
+            (pl_sb_C_is_ides, "is", "ides"),
+            (pl_sb_C_a_ae, "s", "e"),
+            (pl_sb_C_en_ina, "ens", "ina"),
+            (pl_sb_C_um_a, "ums", "a"),
+            (pl_sb_C_us_i, "uses", "i"),
+            (pl_sb_C_on_a, "ons", "a"),
+            (pl_sb_C_o_i_stems, "os", "i"),
+            (pl_sb_C_ex_ices, "exes", "ices"),
+            (pl_sb_C_ix_ices, "ixes", "ices"),
+            (pl_sb_C_i, "s", "i"),
+            (pl_sb_C_im, "s", "im"),
+            (".*eau", "s", "x"),
+            (".*ieu", "s", "x"),
+            (".*tri", "xes", "ces"),
+            (".{2,}[yia]n", "xes", "ges"),
+        )
+
+        words = map(Words, (word1, word2))
+        pair = "|".join(word.last for word in words)
+
+        return (
+            pair in pl_sb_irregular_s.values()
+            or pair in pl_sb_irregular.values()
+            or pair in pl_sb_irregular_caps.values()
+            or any(
+                self._pl_reg_plurals(pair, stems, end1, end2)
+                for stems, end1, end2 in stem_endings
+            )
+        )
+
+    def _pl_check_plurals_adj(self, word1: str, word2: str) -> bool:
+        word1a = word1[: word1.rfind("'")] if word1.endswith(("'s", "'")) else ""
+        word2a = word2[: word2.rfind("'")] if word2.endswith(("'s", "'")) else ""
+
+        return (
+            bool(word1a)
+            and bool(word2a)
+            and (
+                self._pl_check_plurals_N(word1a, word2a)
+                or self._pl_check_plurals_N(word2a, word1a)
+            )
+        )
+
+    def get_count(self, count: Optional[Union[str, int]] = None) -> Union[str, int]:
+        if count is None and self.persistent_count is not None:
+            count = self.persistent_count
+
+        if count is not None:
+            count = (
+                1
+                if (
+                    (str(count) in pl_count_one)
+                    or (
+                        self.classical_dict["zero"]
+                        and str(count).lower() in pl_count_zero
+                    )
+                )
+                else 2
+            )
+        else:
+            count = ""
+        return count
+
+    # @profile
+    def _plnoun(  # noqa: C901
+        self, word: str, count: Optional[Union[str, int]] = None
+    ) -> str:
+        count = self.get_count(count)
+
+        # DEFAULT TO PLURAL
+
+        if count == 1:
+            return word
+
+        # HANDLE USER-DEFINED NOUNS
+
+        value = self.ud_match(word, self.pl_sb_user_defined)
+        if value is not None:
+            return value
+
+        # HANDLE EMPTY WORD, SINGULAR COUNT AND UNINFLECTED PLURALS
+
+        if word == "":
+            return word
+
+        word = Words(word)
+
+        if word.last.lower() in pl_sb_uninflected_complete:
+            if len(word.split_) >= 3:
+                return self._handle_long_compounds(word, count=2) or word
+            return word
+
+        if word in pl_sb_uninflected_caps:
+            return word
+
+        for k, v in pl_sb_uninflected_bysize.items():
+            if word.lowered[-k:] in v:
+                return word
+
+        if self.classical_dict["herd"] and word.last.lower() in pl_sb_uninflected_herd:
+            return word
+
+        # HANDLE COMPOUNDS ("Governor General", "mother-in-law", "aide-de-camp", ETC.)
+
+        mo = PL_SB_POSTFIX_ADJ_STEMS_RE.search(word)
+        if mo and mo.group(2) != "":
+            return f"{self._plnoun(mo.group(1), 2)}{mo.group(2)}"
+
+        if " a " in word.lowered or "-a-" in word.lowered:
+            mo = PL_SB_PREP_DUAL_COMPOUND_RE.search(word)
+            if mo and mo.group(2) != "" and mo.group(3) != "":
+                return (
+                    f"{self._plnoun(mo.group(1), 2)}"
+                    f"{mo.group(2)}"
+                    f"{self._plnoun(mo.group(3))}"
+                )
+
+        if len(word.split_) >= 3:
+            handled_words = self._handle_long_compounds(word, count=2)
+            if handled_words is not None:
+                return handled_words
+
+        # only pluralize denominators in units
+        mo = DENOMINATOR.search(word.lowered)
+        if mo:
+            index = len(mo.group("denominator"))
+            return f"{self._plnoun(word[:index])}{word[index:]}"
+
+        # handle units given in degrees (only accept if
+        # there is no more than one word following)
+        # degree Celsius => degrees Celsius but degree
+        # fahrenheit hour => degree fahrenheit hours
+        if len(word.split_) >= 2 and word.split_[-2] == "degree":
+            return " ".join([self._plnoun(word.first)] + word.split_[1:])
+
+        with contextlib.suppress(ValueError):
+            return self._handle_prepositional_phrase(
+                word.lowered,
+                functools.partial(self._plnoun, count=2),
+                '-',
+            )
+
+        # HANDLE PRONOUNS
+
+        for k, v in pl_pron_acc_keys_bysize.items():
+            if word.lowered[-k:] in v:  # ends with accusative pronoun
+                for pk, pv in pl_prep_bysize.items():
+                    if word.lowered[:pk] in pv:  # starts with a prep
+                        if word.lowered.split() == [
+                            word.lowered[:pk],
+                            word.lowered[-k:],
+                        ]:
+                            # only whitespace in between
+                            return word.lowered[:-k] + pl_pron_acc[word.lowered[-k:]]
+
+        try:
+            return pl_pron_nom[word.lowered]
+        except KeyError:
+            pass
+
+        try:
+            return pl_pron_acc[word.lowered]
+        except KeyError:
+            pass
+
+        # HANDLE ISOLATED IRREGULAR PLURALS
+
+        if word.last in pl_sb_irregular_caps:
+            llen = len(word.last)
+            return f"{word[:-llen]}{pl_sb_irregular_caps[word.last]}"
+
+        lowered_last = word.last.lower()
+        if lowered_last in pl_sb_irregular:
+            llen = len(lowered_last)
+            return f"{word[:-llen]}{pl_sb_irregular[lowered_last]}"
+
+        dash_split = word.lowered.split('-')
+        if (" ".join(dash_split[-2:])).lower() in pl_sb_irregular_compound:
+            llen = len(
+                " ".join(dash_split[-2:])
+            )  # TODO: what if 2 spaces between these words?
+            return (
+                f"{word[:-llen]}"
+                f"{pl_sb_irregular_compound[(' '.join(dash_split[-2:])).lower()]}"
+            )
+
+        if word.lowered[-3:] == "quy":
+            return f"{word[:-1]}ies"
+
+        if word.lowered[-6:] == "person":
+            if self.classical_dict["persons"]:
+                return f"{word}s"
+            else:
+                return f"{word[:-4]}ople"
+
+        # HANDLE FAMILIES OF IRREGULAR PLURALS
+
+        if word.lowered[-3:] == "man":
+            for k, v in pl_sb_U_man_mans_bysize.items():
+                if word.lowered[-k:] in v:
+                    return f"{word}s"
+            for k, v in pl_sb_U_man_mans_caps_bysize.items():
+                if word[-k:] in v:
+                    return f"{word}s"
+            return f"{word[:-3]}men"
+        if word.lowered[-5:] == "mouse":
+            return f"{word[:-5]}mice"
+        if word.lowered[-5:] == "louse":
+            v = pl_sb_U_louse_lice_bysize.get(len(word))
+            if v and word.lowered in v:
+                return f"{word[:-5]}lice"
+            return f"{word}s"
+        if word.lowered[-5:] == "goose":
+            return f"{word[:-5]}geese"
+        if word.lowered[-5:] == "tooth":
+            return f"{word[:-5]}teeth"
+        if word.lowered[-4:] == "foot":
+            return f"{word[:-4]}feet"
+        if word.lowered[-4:] == "taco":
+            return f"{word[:-5]}tacos"
+
+        if word.lowered == "die":
+            return "dice"
+
+        # HANDLE UNASSIMILATED IMPORTS
+
+        if word.lowered[-4:] == "ceps":
+            return word
+        if word.lowered[-4:] == "zoon":
+            return f"{word[:-2]}a"
+        if word.lowered[-3:] in ("cis", "sis", "xis"):
+            return f"{word[:-2]}es"
+
+        for lastlet, d, numend, post in (
+            ("h", pl_sb_U_ch_chs_bysize, None, "s"),
+            ("x", pl_sb_U_ex_ices_bysize, -2, "ices"),
+            ("x", pl_sb_U_ix_ices_bysize, -2, "ices"),
+            ("m", pl_sb_U_um_a_bysize, -2, "a"),
+            ("s", pl_sb_U_us_i_bysize, -2, "i"),
+            ("n", pl_sb_U_on_a_bysize, -2, "a"),
+            ("a", pl_sb_U_a_ae_bysize, None, "e"),
+        ):
+            if word.lowered[-1] == lastlet:  # this test to add speed
+                for k, v in d.items():
+                    if word.lowered[-k:] in v:
+                        return word[:numend] + post
+
+        # HANDLE INCOMPLETELY ASSIMILATED IMPORTS
+
+        if self.classical_dict["ancient"]:
+            if word.lowered[-4:] == "trix":
+                return f"{word[:-1]}ces"
+            if word.lowered[-3:] in ("eau", "ieu"):
+                return f"{word}x"
+            if word.lowered[-3:] in ("ynx", "inx", "anx") and len(word) > 4:
+                return f"{word[:-1]}ges"
+
+            for lastlet, d, numend, post in (
+                ("n", pl_sb_C_en_ina_bysize, -2, "ina"),
+                ("x", pl_sb_C_ex_ices_bysize, -2, "ices"),
+                ("x", pl_sb_C_ix_ices_bysize, -2, "ices"),
+                ("m", pl_sb_C_um_a_bysize, -2, "a"),
+                ("s", pl_sb_C_us_i_bysize, -2, "i"),
+                ("s", pl_sb_C_us_us_bysize, None, ""),
+                ("a", pl_sb_C_a_ae_bysize, None, "e"),
+                ("a", pl_sb_C_a_ata_bysize, None, "ta"),
+                ("s", pl_sb_C_is_ides_bysize, -1, "des"),
+                ("o", pl_sb_C_o_i_bysize, -1, "i"),
+                ("n", pl_sb_C_on_a_bysize, -2, "a"),
+            ):
+                if word.lowered[-1] == lastlet:  # this test to add speed
+                    for k, v in d.items():
+                        if word.lowered[-k:] in v:
+                            return word[:numend] + post
+
+            for d, numend, post in (
+                (pl_sb_C_i_bysize, None, "i"),
+                (pl_sb_C_im_bysize, None, "im"),
+            ):
+                for k, v in d.items():
+                    if word.lowered[-k:] in v:
+                        return word[:numend] + post
+
+        # HANDLE SINGULAR NOUNS ENDING IN ...s OR OTHER SILIBANTS
+
+        if lowered_last in pl_sb_singular_s_complete:
+            return f"{word}es"
+
+        for k, v in pl_sb_singular_s_bysize.items():
+            if word.lowered[-k:] in v:
+                return f"{word}es"
+
+        if word.lowered[-2:] == "es" and word[0] == word[0].upper():
+            return f"{word}es"
+
+        if word.lowered[-1] == "z":
+            for k, v in pl_sb_z_zes_bysize.items():
+                if word.lowered[-k:] in v:
+                    return f"{word}es"
+
+            if word.lowered[-2:-1] != "z":
+                return f"{word}zes"
+
+        if word.lowered[-2:] == "ze":
+            for k, v in pl_sb_ze_zes_bysize.items():
+                if word.lowered[-k:] in v:
+                    return f"{word}s"
+
+        if word.lowered[-2:] in ("ch", "sh", "zz", "ss") or word.lowered[-1] == "x":
+            return f"{word}es"
+
+        # HANDLE ...f -> ...ves
+
+        if word.lowered[-3:] in ("elf", "alf", "olf"):
+            return f"{word[:-1]}ves"
+        if word.lowered[-3:] == "eaf" and word.lowered[-4:-3] != "d":
+            return f"{word[:-1]}ves"
+        if word.lowered[-4:] in ("nife", "life", "wife"):
+            return f"{word[:-2]}ves"
+        if word.lowered[-3:] == "arf":
+            return f"{word[:-1]}ves"
+
+        # HANDLE ...y
+
+        if word.lowered[-1] == "y":
+            if word.lowered[-2:-1] in "aeiou" or len(word) == 1:
+                return f"{word}s"
+
+            if self.classical_dict["names"]:
+                if word.lowered[-1] == "y" and word[0] == word[0].upper():
+                    return f"{word}s"
+
+            return f"{word[:-1]}ies"
+
+        # HANDLE ...o
+
+        if lowered_last in pl_sb_U_o_os_complete:
+            return f"{word}s"
+
+        for k, v in pl_sb_U_o_os_bysize.items():
+            if word.lowered[-k:] in v:
+                return f"{word}s"
+
+        if word.lowered[-2:] in ("ao", "eo", "io", "oo", "uo"):
+            return f"{word}s"
+
+        if word.lowered[-1] == "o":
+            return f"{word}es"
+
+        # OTHERWISE JUST ADD ...s
+
+        return f"{word}s"
+
+    @classmethod
+    def _handle_prepositional_phrase(cls, phrase, transform, sep):
+        """
+        Given a word or phrase possibly separated by sep, parse out
+        the prepositional phrase and apply the transform to the word
+        preceding the prepositional phrase.
+
+        Raise ValueError if the pivot is not found or if at least two
+        separators are not found.
+
+        >>> engine._handle_prepositional_phrase("man-of-war", str.upper, '-')
+        'MAN-of-war'
+        >>> engine._handle_prepositional_phrase("man of war", str.upper, ' ')
+        'MAN of war'
+        """
+        parts = phrase.split(sep)
+        if len(parts) < 3:
+            raise ValueError("Cannot handle words with fewer than two separators")
+
+        pivot = cls._find_pivot(parts, pl_prep_list_da)
+
+        transformed = transform(parts[pivot - 1]) or parts[pivot - 1]
+        return " ".join(
+            parts[: pivot - 1] + [sep.join([transformed, parts[pivot], ''])]
+        ) + " ".join(parts[(pivot + 1) :])
+
+    def _handle_long_compounds(self, word: Words, count: int) -> Union[str, None]:
+        """
+        Handles the plural and singular for compound `Words` that
+        have three or more words, based on the given count.
+
+        >>> engine()._handle_long_compounds(Words("pair of scissors"), 2)
+        'pairs of scissors'
+        >>> engine()._handle_long_compounds(Words("men beyond hills"), 1)
+        'man beyond hills'
+        """
+        inflection = self._sinoun if count == 1 else self._plnoun
+        solutions = (  # type: ignore
+            " ".join(
+                itertools.chain(
+                    leader,
+                    [inflection(cand, count), prep],  # type: ignore
+                    trailer,
+                )
+            )
+            for leader, (cand, prep), trailer in windowed_complete(word.split_, 2)
+            if prep in pl_prep_list_da  # type: ignore
+        )
+        return next(solutions, None)
+
+    @staticmethod
+    def _find_pivot(words, candidates):
+        pivots = (
+            index for index in range(1, len(words) - 1) if words[index] in candidates
+        )
+        try:
+            return next(pivots)
+        except StopIteration:
+            raise ValueError("No pivot found") from None
+
+    def _pl_special_verb(  # noqa: C901
+        self, word: str, count: Optional[Union[str, int]] = None
+    ) -> Union[str, bool]:
+        if self.classical_dict["zero"] and str(count).lower() in pl_count_zero:
+            return False
+        count = self.get_count(count)
+
+        if count == 1:
+            return word
+
+        # HANDLE USER-DEFINED VERBS
+
+        value = self.ud_match(word, self.pl_v_user_defined)
+        if value is not None:
+            return value
+
+        # HANDLE IRREGULAR PRESENT TENSE (SIMPLE AND COMPOUND)
+
+        try:
+            words = Words(word)
+        except IndexError:
+            return False  # word is ''
+
+        if words.first in plverb_irregular_pres:
+            return f"{plverb_irregular_pres[words.first]}{words[len(words.first) :]}"
+
+        # HANDLE IRREGULAR FUTURE, PRETERITE AND PERFECT TENSES
+
+        if words.first in plverb_irregular_non_pres:
+            return word
+
+        # HANDLE PRESENT NEGATIONS (SIMPLE AND COMPOUND)
+
+        if words.first.endswith("n't") and words.first[:-3] in plverb_irregular_pres:
+            return (
+                f"{plverb_irregular_pres[words.first[:-3]]}n't"
+                f"{words[len(words.first) :]}"
+            )
+
+        if words.first.endswith("n't"):
+            return word
+
+        # HANDLE SPECIAL CASES
+
+        mo = PLVERB_SPECIAL_S_RE.search(word)
+        if mo:
+            return False
+        if WHITESPACE.search(word):
+            return False
+
+        if words.lowered == "quizzes":
+            return "quiz"
+
+        # HANDLE STANDARD 3RD PERSON (CHOP THE ...(e)s OFF SINGLE WORDS)
+
+        if (
+            words.lowered[-4:] in ("ches", "shes", "zzes", "sses")
+            or words.lowered[-3:] == "xes"
+        ):
+            return words[:-2]
+
+        if words.lowered[-3:] == "ies" and len(words) > 3:
+            return words.lowered[:-3] + "y"
+
+        if (
+            words.last.lower() in pl_v_oes_oe
+            or words.lowered[-4:] in pl_v_oes_oe_endings_size4
+            or words.lowered[-5:] in pl_v_oes_oe_endings_size5
+        ):
+            return words[:-1]
+
+        if words.lowered.endswith("oes") and len(words) > 3:
+            return words.lowered[:-2]
+
+        mo = ENDS_WITH_S.search(words)
+        if mo:
+            return mo.group(1)
+
+        # OTHERWISE, A REGULAR VERB (HANDLE ELSEWHERE)
+
+        return False
+
+    def _pl_general_verb(
+        self, word: str, count: Optional[Union[str, int]] = None
+    ) -> str:
+        count = self.get_count(count)
+
+        if count == 1:
+            return word
+
+        # HANDLE AMBIGUOUS PRESENT TENSES  (SIMPLE AND COMPOUND)
+
+        mo = plverb_ambiguous_pres_keys.search(word)
+        if mo:
+            return f"{plverb_ambiguous_pres[mo.group(1).lower()]}{mo.group(2)}"
+
+        # HANDLE AMBIGUOUS PRETERITE AND PERFECT TENSES
+
+        mo = plverb_ambiguous_non_pres.search(word)
+        if mo:
+            return word
+
+        # OTHERWISE, 1st OR 2ND PERSON IS UNINFLECTED
+
+        return word
+
+    def _pl_special_adjective(
+        self, word: str, count: Optional[Union[str, int]] = None
+    ) -> Union[str, bool]:
+        count = self.get_count(count)
+
+        if count == 1:
+            return word
+
+        # HANDLE USER-DEFINED ADJECTIVES
+
+        value = self.ud_match(word, self.pl_adj_user_defined)
+        if value is not None:
+            return value
+
+        # HANDLE KNOWN CASES
+
+        mo = pl_adj_special_keys.search(word)
+        if mo:
+            return pl_adj_special[mo.group(1).lower()]
+
+        # HANDLE POSSESSIVES
+
+        mo = pl_adj_poss_keys.search(word)
+        if mo:
+            return pl_adj_poss[mo.group(1).lower()]
+
+        mo = ENDS_WITH_APOSTROPHE_S.search(word)
+        if mo:
+            pl = self.plural_noun(mo.group(1))
+            trailing_s = "" if pl[-1] == "s" else "s"
+            return f"{pl}'{trailing_s}"
+
+        # OTHERWISE, NO IDEA
+
+        return False
+
+    # @profile
+    def _sinoun(  # noqa: C901
+        self,
+        word: str,
+        count: Optional[Union[str, int]] = None,
+        gender: Optional[str] = None,
+    ) -> Union[str, bool]:
+        count = self.get_count(count)
+
+        # DEFAULT TO PLURAL
+
+        if count == 2:
+            return word
+
+        # SET THE GENDER
+
+        try:
+            if gender is None:
+                gender = self.thegender
+            elif gender not in singular_pronoun_genders:
+                raise BadGenderError
+        except (TypeError, IndexError) as err:
+            raise BadGenderError from err
+
+        # HANDLE USER-DEFINED NOUNS
+
+        value = self.ud_match(word, self.si_sb_user_defined)
+        if value is not None:
+            return value
+
+        # HANDLE EMPTY WORD, SINGULAR COUNT AND UNINFLECTED PLURALS
+
+        if word == "":
+            return word
+
+        if word in si_sb_ois_oi_case:
+            return word[:-1]
+
+        words = Words(word)
+
+        if words.last.lower() in pl_sb_uninflected_complete:
+            if len(words.split_) >= 3:
+                return self._handle_long_compounds(words, count=1) or word
+            return word
+
+        if word in pl_sb_uninflected_caps:
+            return word
+
+        for k, v in pl_sb_uninflected_bysize.items():
+            if words.lowered[-k:] in v:
+                return word
+
+        if self.classical_dict["herd"] and words.last.lower() in pl_sb_uninflected_herd:
+            return word
+
+        if words.last.lower() in pl_sb_C_us_us:
+            return word if self.classical_dict["ancient"] else False
+
+        # HANDLE COMPOUNDS ("Governor General", "mother-in-law", "aide-de-camp", ETC.)
+
+        mo = PL_SB_POSTFIX_ADJ_STEMS_RE.search(word)
+        if mo and mo.group(2) != "":
+            return f"{self._sinoun(mo.group(1), 1, gender=gender)}{mo.group(2)}"
+
+        with contextlib.suppress(ValueError):
+            return self._handle_prepositional_phrase(
+                words.lowered,
+                functools.partial(self._sinoun, count=1, gender=gender),
+                ' ',
+            )
+
+        with contextlib.suppress(ValueError):
+            return self._handle_prepositional_phrase(
+                words.lowered,
+                functools.partial(self._sinoun, count=1, gender=gender),
+                '-',
+            )
+
+        # HANDLE PRONOUNS
+
+        for k, v in si_pron_acc_keys_bysize.items():
+            if words.lowered[-k:] in v:  # ends with accusative pronoun
+                for pk, pv in pl_prep_bysize.items():
+                    if words.lowered[:pk] in pv:  # starts with a prep
+                        if words.lowered.split() == [
+                            words.lowered[:pk],
+                            words.lowered[-k:],
+                        ]:
+                            # only whitespace in between
+                            return words.lowered[:-k] + get_si_pron(
+                                "acc", words.lowered[-k:], gender
+                            )
+
+        try:
+            return get_si_pron("nom", words.lowered, gender)
+        except KeyError:
+            pass
+
+        try:
+            return get_si_pron("acc", words.lowered, gender)
+        except KeyError:
+            pass
+
+        # HANDLE ISOLATED IRREGULAR PLURALS
+
+        if words.last in si_sb_irregular_caps:
+            llen = len(words.last)
+            return f"{word[:-llen]}{si_sb_irregular_caps[words.last]}"
+
+        if words.last.lower() in si_sb_irregular:
+            llen = len(words.last.lower())
+            return f"{word[:-llen]}{si_sb_irregular[words.last.lower()]}"
+
+        dash_split = words.lowered.split("-")
+        if (" ".join(dash_split[-2:])).lower() in si_sb_irregular_compound:
+            llen = len(
+                " ".join(dash_split[-2:])
+            )  # TODO: what if 2 spaces between these words?
+            return "{}{}".format(
+                word[:-llen],
+                si_sb_irregular_compound[(" ".join(dash_split[-2:])).lower()],
+            )
+
+        if words.lowered[-5:] == "quies":
+            return word[:-3] + "y"
+
+        if words.lowered[-7:] == "persons":
+            return word[:-1]
+        if words.lowered[-6:] == "people":
+            return word[:-4] + "rson"
+
+        # HANDLE FAMILIES OF IRREGULAR PLURALS
+
+        if words.lowered[-4:] == "mans":
+            for k, v in si_sb_U_man_mans_bysize.items():
+                if words.lowered[-k:] in v:
+                    return word[:-1]
+            for k, v in si_sb_U_man_mans_caps_bysize.items():
+                if word[-k:] in v:
+                    return word[:-1]
+        if words.lowered[-3:] == "men":
+            return word[:-3] + "man"
+        if words.lowered[-4:] == "mice":
+            return word[:-4] + "mouse"
+        if words.lowered[-4:] == "lice":
+            v = si_sb_U_louse_lice_bysize.get(len(word))
+            if v and words.lowered in v:
+                return word[:-4] + "louse"
+        if words.lowered[-5:] == "geese":
+            return word[:-5] + "goose"
+        if words.lowered[-5:] == "teeth":
+            return word[:-5] + "tooth"
+        if words.lowered[-4:] == "feet":
+            return word[:-4] + "foot"
+
+        if words.lowered == "dice":
+            return "die"
+
+        # HANDLE UNASSIMILATED IMPORTS
+
+        if words.lowered[-4:] == "ceps":
+            return word
+        if words.lowered[-3:] == "zoa":
+            return word[:-1] + "on"
+
+        for lastlet, d, unass_numend, post in (
+            ("s", si_sb_U_ch_chs_bysize, -1, ""),
+            ("s", si_sb_U_ex_ices_bysize, -4, "ex"),
+            ("s", si_sb_U_ix_ices_bysize, -4, "ix"),
+            ("a", si_sb_U_um_a_bysize, -1, "um"),
+            ("i", si_sb_U_us_i_bysize, -1, "us"),
+            ("a", si_sb_U_on_a_bysize, -1, "on"),
+            ("e", si_sb_U_a_ae_bysize, -1, ""),
+        ):
+            if words.lowered[-1] == lastlet:  # this test to add speed
+                for k, v in d.items():
+                    if words.lowered[-k:] in v:
+                        return word[:unass_numend] + post
+
+        # HANDLE INCOMPLETELY ASSIMILATED IMPORTS
+
+        if self.classical_dict["ancient"]:
+            if words.lowered[-6:] == "trices":
+                return word[:-3] + "x"
+            if words.lowered[-4:] in ("eaux", "ieux"):
+                return word[:-1]
+            if words.lowered[-5:] in ("ynges", "inges", "anges") and len(word) > 6:
+                return word[:-3] + "x"
+
+            for lastlet, d, class_numend, post in (
+                ("a", si_sb_C_en_ina_bysize, -3, "en"),
+                ("s", si_sb_C_ex_ices_bysize, -4, "ex"),
+                ("s", si_sb_C_ix_ices_bysize, -4, "ix"),
+                ("a", si_sb_C_um_a_bysize, -1, "um"),
+                ("i", si_sb_C_us_i_bysize, -1, "us"),
+                ("s", pl_sb_C_us_us_bysize, None, ""),
+                ("e", si_sb_C_a_ae_bysize, -1, ""),
+                ("a", si_sb_C_a_ata_bysize, -2, ""),
+                ("s", si_sb_C_is_ides_bysize, -3, "s"),
+                ("i", si_sb_C_o_i_bysize, -1, "o"),
+                ("a", si_sb_C_on_a_bysize, -1, "on"),
+                ("m", si_sb_C_im_bysize, -2, ""),
+                ("i", si_sb_C_i_bysize, -1, ""),
+            ):
+                if words.lowered[-1] == lastlet:  # this test to add speed
+                    for k, v in d.items():
+                        if words.lowered[-k:] in v:
+                            return word[:class_numend] + post
+
+        # HANDLE PLURLS ENDING IN uses -> use
+
+        if (
+            words.lowered[-6:] == "houses"
+            or word in si_sb_uses_use_case
+            or words.last.lower() in si_sb_uses_use
+        ):
+            return word[:-1]
+
+        # HANDLE PLURLS ENDING IN ies -> ie
+
+        if word in si_sb_ies_ie_case or words.last.lower() in si_sb_ies_ie:
+            return word[:-1]
+
+        # HANDLE PLURLS ENDING IN oes -> oe
+
+        if (
+            words.lowered[-5:] == "shoes"
+            or word in si_sb_oes_oe_case
+            or words.last.lower() in si_sb_oes_oe
+        ):
+            return word[:-1]
+
+        # HANDLE SINGULAR NOUNS ENDING IN ...s OR OTHER SILIBANTS
+
+        if word in si_sb_sses_sse_case or words.last.lower() in si_sb_sses_sse:
+            return word[:-1]
+
+        if words.last.lower() in si_sb_singular_s_complete:
+            return word[:-2]
+
+        for k, v in si_sb_singular_s_bysize.items():
+            if words.lowered[-k:] in v:
+                return word[:-2]
+
+        if words.lowered[-4:] == "eses" and word[0] == word[0].upper():
+            return word[:-2]
+
+        if words.last.lower() in si_sb_z_zes:
+            return word[:-2]
+
+        if words.last.lower() in si_sb_zzes_zz:
+            return word[:-2]
+
+        if words.lowered[-4:] == "zzes":
+            return word[:-3]
+
+        if word in si_sb_ches_che_case or words.last.lower() in si_sb_ches_che:
+            return word[:-1]
+
+        if words.lowered[-4:] in ("ches", "shes"):
+            return word[:-2]
+
+        if words.last.lower() in si_sb_xes_xe:
+            return word[:-1]
+
+        if words.lowered[-3:] == "xes":
+            return word[:-2]
+
+        # HANDLE ...f -> ...ves
+
+        if word in si_sb_ves_ve_case or words.last.lower() in si_sb_ves_ve:
+            return word[:-1]
+
+        if words.lowered[-3:] == "ves":
+            if words.lowered[-5:-3] in ("el", "al", "ol"):
+                return word[:-3] + "f"
+            if words.lowered[-5:-3] == "ea" and word[-6:-5] != "d":
+                return word[:-3] + "f"
+            if words.lowered[-5:-3] in ("ni", "li", "wi"):
+                return word[:-3] + "fe"
+            if words.lowered[-5:-3] == "ar":
+                return word[:-3] + "f"
+
+        # HANDLE ...y
+
+        if words.lowered[-2:] == "ys":
+            if len(words.lowered) > 2 and words.lowered[-3] in "aeiou":
+                return word[:-1]
+
+            if self.classical_dict["names"]:
+                if words.lowered[-2:] == "ys" and word[0] == word[0].upper():
+                    return word[:-1]
+
+        if words.lowered[-3:] == "ies":
+            return word[:-3] + "y"
+
+        # HANDLE ...o
+
+        if words.lowered[-2:] == "os":
+            if words.last.lower() in si_sb_U_o_os_complete:
+                return word[:-1]
+
+            for k, v in si_sb_U_o_os_bysize.items():
+                if words.lowered[-k:] in v:
+                    return word[:-1]
+
+            if words.lowered[-3:] in ("aos", "eos", "ios", "oos", "uos"):
+                return word[:-1]
+
+        if words.lowered[-3:] == "oes":
+            return word[:-2]
+
+        # UNASSIMILATED IMPORTS FINAL RULE
+
+        if word in si_sb_es_is:
+            return word[:-2] + "is"
+
+        # OTHERWISE JUST REMOVE ...s
+
+        if words.lowered[-1] == "s":
+            return word[:-1]
+
+        # COULD NOT FIND SINGULAR
+
+        return False
+
+    # ADJECTIVES
+
+    @typechecked
+    def a(self, text: Word, count: Optional[Union[int, str, Any]] = 1) -> str:
+        """
+        Return the appropriate indefinite article followed by text.
+
+        The indefinite article is either 'a' or 'an'.
+
+        If count is not one, then return count followed by text
+        instead of 'a' or 'an'.
+
+        Whitespace at the start and end is preserved.
+
+        """
+        mo = INDEFINITE_ARTICLE_TEST.search(text)
+        if mo:
+            word = mo.group(2)
+            if not word:
+                return text
+            pre = mo.group(1)
+            post = mo.group(3)
+            result = self._indef_article(word, count)
+            return f"{pre}{result}{post}"
+        return ""
+
+    an = a
+
+    _indef_article_cases = (
+        # HANDLE ORDINAL FORMS
+        (A_ordinal_a, "a"),
+        (A_ordinal_an, "an"),
+        # HANDLE SPECIAL CASES
+        (A_explicit_an, "an"),
+        (SPECIAL_AN, "an"),
+        (SPECIAL_A, "a"),
+        # HANDLE ABBREVIATIONS
+        (A_abbrev, "an"),
+        (SPECIAL_ABBREV_AN, "an"),
+        (SPECIAL_ABBREV_A, "a"),
+        # HANDLE CONSONANTS
+        (CONSONANTS, "a"),
+        # HANDLE SPECIAL VOWEL-FORMS
+        (ARTICLE_SPECIAL_EU, "a"),
+        (ARTICLE_SPECIAL_ONCE, "a"),
+        (ARTICLE_SPECIAL_ONETIME, "a"),
+        (ARTICLE_SPECIAL_UNIT, "a"),
+        (ARTICLE_SPECIAL_UBA, "a"),
+        (ARTICLE_SPECIAL_UKR, "a"),
+        (A_explicit_a, "a"),
+        # HANDLE SPECIAL CAPITALS
+        (SPECIAL_CAPITALS, "a"),
+        # HANDLE VOWELS
+        (VOWELS, "an"),
+        # HANDLE y...
+        # (BEFORE CERTAIN CONSONANTS IMPLIES (UNNATURALIZED) "i.." SOUND)
+        (A_y_cons, "an"),
+    )
+
+    def _indef_article(self, word: str, count: Union[int, str, Any]) -> str:
+        mycount = self.get_count(count)
+
+        if mycount != 1:
+            return f"{count} {word}"
+
+        # HANDLE USER-DEFINED VARIANTS
+
+        value = self.ud_match(word, self.A_a_user_defined)
+        if value is not None:
+            return f"{value} {word}"
+
+        matches = (
+            f'{article} {word}'
+            for regexen, article in self._indef_article_cases
+            if regexen.search(word)
+        )
+
+        # OTHERWISE, GUESS "a"
+        fallback = f'a {word}'
+        return next(matches, fallback)
+
+    # 2. TRANSLATE ZERO-QUANTIFIED $word TO "no plural($word)"
+
+    @typechecked
+    def no(self, text: Word, count: Optional[Union[int, str]] = None) -> str:
+        """
+        If count is 0, no, zero or nil, return 'no' followed by the plural
+        of text.
+
+        If count is one of:
+            1, a, an, one, each, every, this, that
+            return count followed by text.
+
+        Otherwise return count follow by the plural of text.
+
+        In the return value count is always followed by a space.
+
+        Whitespace at the start and end is preserved.
+
+        """
+        if count is None and self.persistent_count is not None:
+            count = self.persistent_count
+
+        if count is None:
+            count = 0
+        mo = PARTITION_WORD.search(text)
+        if mo:
+            pre = mo.group(1)
+            word = mo.group(2)
+            post = mo.group(3)
+        else:
+            pre = ""
+            word = ""
+            post = ""
+
+        if str(count).lower() in pl_count_zero:
+            count = 'no'
+        return f"{pre}{count} {self.plural(word, count)}{post}"
+
+    # PARTICIPLES
+
+    @typechecked
+    def present_participle(self, word: Word) -> str:
+        """
+        Return the present participle for word.
+
+        word is the 3rd person singular verb.
+
+        """
+        plv = self.plural_verb(word, 2)
+        ans = plv
+
+        for regexen, repl in PRESENT_PARTICIPLE_REPLACEMENTS:
+            ans, num = regexen.subn(repl, plv)
+            if num:
+                return f"{ans}ing"
+        return f"{ans}ing"
+
+    # NUMERICAL INFLECTIONS
+
+    @typechecked
+    def ordinal(self, num: Union[Number, Word]) -> str:
+        """
+        Return the ordinal of num.
+
+        >>> ordinal = engine().ordinal
+        >>> ordinal(1)
+        '1st'
+        >>> ordinal('one')
+        'first'
+        """
+        if DIGIT.match(str(num)):
+            if isinstance(num, (float, int)) and int(num) == num:
+                n = int(num)
+            else:
+                if "." in str(num):
+                    try:
+                        # numbers after decimal,
+                        # so only need last one for ordinal
+                        n = int(str(num)[-1])
+
+                    except ValueError:  # ends with '.', so need to use whole string
+                        n = int(str(num)[:-1])
+                else:
+                    n = int(num)  # type: ignore
+            try:
+                post = nth[n % 100]
+            except KeyError:
+                post = nth[n % 10]
+            return f"{num}{post}"
+        else:
+            return self._sub_ord(num)
+
+    def millfn(self, ind: int = 0) -> str:
+        if ind > len(mill) - 1:
+            raise NumOutOfRangeError
+        return mill[ind]
+
+    def unitfn(self, units: int, mindex: int = 0) -> str:
+        return f"{unit[units]}{self.millfn(mindex)}"
+
+    def tenfn(self, tens, units, mindex=0) -> str:
+        if tens != 1:
+            tens_part = ten[tens]
+            if tens and units:
+                hyphen = "-"
+            else:
+                hyphen = ""
+            unit_part = unit[units]
+            mill_part = self.millfn(mindex)
+            return f"{tens_part}{hyphen}{unit_part}{mill_part}"
+        return f"{teen[units]}{mill[mindex]}"
+
+    def hundfn(self, hundreds: int, tens: int, units: int, mindex: int) -> str:
+        if hundreds:
+            andword = f" {self._number_args['andword']} " if tens or units else ""
+            # use unit not unitfn as simpler
+            return (
+                f"{unit[hundreds]} hundred{andword}"
+                f"{self.tenfn(tens, units)}{self.millfn(mindex)}, "
+            )
+        if tens or units:
+            return f"{self.tenfn(tens, units)}{self.millfn(mindex)}, "
+        return ""
+
+    def group1sub(self, mo: Match) -> str:
+        units = int(mo.group(1))
+        if units == 1:
+            return f" {self._number_args['one']}, "
+        elif units:
+            return f"{unit[units]}, "
+        else:
+            return f" {self._number_args['zero']}, "
+
+    def group1bsub(self, mo: Match) -> str:
+        units = int(mo.group(1))
+        if units:
+            return f"{unit[units]}, "
+        else:
+            return f" {self._number_args['zero']}, "
+
+    def group2sub(self, mo: Match) -> str:
+        tens = int(mo.group(1))
+        units = int(mo.group(2))
+        if tens:
+            return f"{self.tenfn(tens, units)}, "
+        if units:
+            return f" {self._number_args['zero']} {unit[units]}, "
+        return f" {self._number_args['zero']} {self._number_args['zero']}, "
+
+    def group3sub(self, mo: Match) -> str:
+        hundreds = int(mo.group(1))
+        tens = int(mo.group(2))
+        units = int(mo.group(3))
+        if hundreds == 1:
+            hunword = f" {self._number_args['one']}"
+        elif hundreds:
+            hunword = str(unit[hundreds])
+        else:
+            hunword = f" {self._number_args['zero']}"
+        if tens:
+            tenword = self.tenfn(tens, units)
+        elif units:
+            tenword = f" {self._number_args['zero']} {unit[units]}"
+        else:
+            tenword = f" {self._number_args['zero']} {self._number_args['zero']}"
+        return f"{hunword} {tenword}, "
+
+    def hundsub(self, mo: Match) -> str:
+        ret = self.hundfn(
+            int(mo.group(1)), int(mo.group(2)), int(mo.group(3)), self.mill_count
+        )
+        self.mill_count += 1
+        return ret
+
+    def tensub(self, mo: Match) -> str:
+        return f"{self.tenfn(int(mo.group(1)), int(mo.group(2)), self.mill_count)}, "
+
+    def unitsub(self, mo: Match) -> str:
+        return f"{self.unitfn(int(mo.group(1)), self.mill_count)}, "
+
+    def enword(self, num: str, group: int) -> str:
+        # import pdb
+        # pdb.set_trace()
+
+        if group == 1:
+            num = DIGIT_GROUP.sub(self.group1sub, num)
+        elif group == 2:
+            num = TWO_DIGITS.sub(self.group2sub, num)
+            num = DIGIT_GROUP.sub(self.group1bsub, num, 1)
+        elif group == 3:
+            num = THREE_DIGITS.sub(self.group3sub, num)
+            num = TWO_DIGITS.sub(self.group2sub, num, 1)
+            num = DIGIT_GROUP.sub(self.group1sub, num, 1)
+        elif int(num) == 0:
+            num = self._number_args["zero"]
+        elif int(num) == 1:
+            num = self._number_args["one"]
+        else:
+            num = num.lstrip().lstrip("0")
+            self.mill_count = 0
+            # surely there's a better way to do the next bit
+            mo = THREE_DIGITS_WORD.search(num)
+            while mo:
+                num = THREE_DIGITS_WORD.sub(self.hundsub, num, 1)
+                mo = THREE_DIGITS_WORD.search(num)
+            num = TWO_DIGITS_WORD.sub(self.tensub, num, 1)
+            num = ONE_DIGIT_WORD.sub(self.unitsub, num, 1)
+        return num
+
+    @staticmethod
+    def _sub_ord(val):
+        new = ordinal_suff.sub(lambda match: ordinal[match.group(1)], val)
+        return new + "th" * (new == val)
+
+    @classmethod
+    def _chunk_num(cls, num, decimal, group):
+        if decimal:
+            max_split = -1 if group != 0 else 1
+            chunks = num.split(".", max_split)
+        else:
+            chunks = [num]
+        return cls._remove_last_blank(chunks)
+
+    @staticmethod
+    def _remove_last_blank(chunks):
+        """
+        Remove the last item from chunks if it's a blank string.
+
+        Return the resultant chunks and whether the last item was removed.
+        """
+        removed = chunks[-1] == ""
+        result = chunks[:-1] if removed else chunks
+        return result, removed
+
+    @staticmethod
+    def _get_sign(num):
+        return {'+': 'plus', '-': 'minus'}.get(num.lstrip()[0], '')
+
+    @typechecked
+    def number_to_words(  # noqa: C901
+        self,
+        num: Union[Number, Word],
+        wantlist: bool = False,
+        group: int = 0,
+        comma: Union[Falsish, str] = ",",
+        andword: str = "and",
+        zero: str = "zero",
+        one: str = "one",
+        decimal: Union[Falsish, str] = "point",
+        threshold: Optional[int] = None,
+    ) -> Union[str, List[str]]:
+        """
+        Return a number in words.
+
+        group = 1, 2 or 3 to group numbers before turning into words
+        comma: define comma
+
+        andword:
+            word for 'and'. Can be set to ''.
+            e.g. "one hundred and one" vs "one hundred one"
+
+        zero: word for '0'
+        one: word for '1'
+        decimal: word for decimal point
+        threshold: numbers above threshold not turned into words
+
+        parameters not remembered from last call. Departure from Perl version.
+        """
+        self._number_args = {"andword": andword, "zero": zero, "one": one}
+        num = str(num)
+
+        # Handle "stylistic" conversions (up to a given threshold)...
+        if threshold is not None and float(num) > threshold:
+            spnum = num.split(".", 1)
+            while comma:
+                (spnum[0], n) = FOUR_DIGIT_COMMA.subn(r"\1,\2", spnum[0])
+                if n == 0:
+                    break
+            try:
+                return f"{spnum[0]}.{spnum[1]}"
+            except IndexError:
+                return str(spnum[0])
+
+        if group < 0 or group > 3:
+            raise BadChunkingOptionError
+
+        sign = self._get_sign(num)
+
+        if num in nth_suff:
+            num = zero
+
+        myord = num[-2:] in nth_suff
+        if myord:
+            num = num[:-2]
+
+        chunks, finalpoint = self._chunk_num(num, decimal, group)
+
+        loopstart = chunks[0] == ""
+        first: bool | None = not loopstart
+
+        def _handle_chunk(chunk):
+            nonlocal first
+
+            # remove all non numeric \D
+            chunk = NON_DIGIT.sub("", chunk)
+            if chunk == "":
+                chunk = "0"
+
+            if group == 0 and not first:
+                chunk = self.enword(chunk, 1)
+            else:
+                chunk = self.enword(chunk, group)
+
+            if chunk[-2:] == ", ":
+                chunk = chunk[:-2]
+            chunk = WHITESPACES_COMMA.sub(",", chunk)
+
+            if group == 0 and first:
+                chunk = COMMA_WORD.sub(f" {andword} \\1", chunk)
+            chunk = WHITESPACES.sub(" ", chunk)
+            # chunk = re.sub(r"(\A\s|\s\Z)", self.blankfn, chunk)
+            chunk = chunk.strip()
+            if first:
+                first = None
+            return chunk
+
+        chunks[loopstart:] = map(_handle_chunk, chunks[loopstart:])
+
+        numchunks = []
+        if first != 0:
+            numchunks = chunks[0].split(f"{comma} ")
+
+        if myord and numchunks:
+            numchunks[-1] = self._sub_ord(numchunks[-1])
+
+        for chunk in chunks[1:]:
+            numchunks.append(decimal)
+            numchunks.extend(chunk.split(f"{comma} "))
+
+        if finalpoint:
+            numchunks.append(decimal)
+
+        if wantlist:
+            return [sign] * bool(sign) + numchunks
+
+        signout = f"{sign} " if sign else ""
+        valout = (
+            ', '.join(numchunks)
+            if group
+            else ''.join(self._render(numchunks, decimal, comma))
+        )
+        return signout + valout
+
+    @staticmethod
+    def _render(chunks, decimal, comma):
+        first_item = chunks.pop(0)
+        yield first_item
+        first = decimal is None or not first_item.endswith(decimal)
+        for nc in chunks:
+            if nc == decimal:
+                first = False
+            elif first:
+                yield comma
+            yield f" {nc}"
+
+    @typechecked
+    def join(
+        self,
+        words: Optional[Sequence[Word]],
+        sep: Optional[str] = None,
+        sep_spaced: bool = True,
+        final_sep: Optional[str] = None,
+        conj: str = "and",
+        conj_spaced: bool = True,
+    ) -> str:
+        """
+        Join words into a list.
+
+        e.g. join(['ant', 'bee', 'fly']) returns 'ant, bee, and fly'
+
+        options:
+        conj: replacement for 'and'
+        sep: separator. default ',', unless ',' is in the list then ';'
+        final_sep: final separator. default ',', unless ',' is in the list then ';'
+        conj_spaced: boolean. Should conj have spaces around it
+
+        """
+        if not words:
+            return ""
+        if len(words) == 1:
+            return words[0]
+
+        if conj_spaced:
+            if conj == "":
+                conj = " "
+            else:
+                conj = f" {conj} "
+
+        if len(words) == 2:
+            return f"{words[0]}{conj}{words[1]}"
+
+        if sep is None:
+            if "," in "".join(words):
+                sep = ";"
+            else:
+                sep = ","
+        if final_sep is None:
+            final_sep = sep
+
+        final_sep = f"{final_sep}{conj}"
+
+        if sep_spaced:
+            sep += " "
+
+        return f"{sep.join(words[0:-1])}{final_sep}{words[-1]}"