--[[
This file is part of the `arabluatex' package

ArabLuaTeX -- Processing ArabTeX notation under LuaLaTeX
Copyright (C) 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Robert Alessi <alessi@robertalessi.net>

Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Please send error reports and suggestions for improvements to Robert
Alessi <alessi@robertalessi.net>
--]]

arbmarks = {
   {a="@bismillah", b="\\arabicfont{}^^^^fdfd", c="\\arb[trans]{bi-ismi \\uc{'l-l_ahi} 'l-ra.hm_ani 'l-ra.hImi}"},
   {a="@salam", b="\\arabicfont{}^^^^fdf5", c="\\arb[trans]{.sall_A\\arbnull{'l-l_ahu} \\uc{'l-l_ahu} `alay-hi wa-sallama}"},
   {a="@jalla", b="\\arabicfont{}^^^^fdfb", c="\\arb[trans]{^galla ^galAla-hu}"},
   {a="@slm", b="\\arabicfont{}^^^^fdfa", c="\\arb[trans]{.sall_A\\arbnull{'l-l_ahu} \\uc{'l-l_ahu} `alay-hi wa-sallama}"}
}

abjad = {
{"a\"'", "b", "j", "d", "h", "w", "z", ".h", ".t"},
{"y", "k", "l", "m", "n", "s", "`", "f", ".s", },
{"q", "r", "^s", "t", "_t", "x", "_d", ".d", ".z", },
{".g"}
}

numbers = {
   {a="0", b="٠"},
   {a="1", b="١"},
   {a="2", b="٢"},
   {a="3", b="٣"},
   {a="4", b="٤"},
   {a="5", b="٥"},
   {a="6", b="٦"},
   {a="7", b="٧"},
   {a="8", b="٨"},
   {a="9", b="٩"}
}

raw = {
   {a="A", b="َا"},
   {a="U", b="ُو"},
   {a="I", b="ِي"},
   {a="b", b="ب"},
   {a="t", b="ت"},
   {a="j", b="ج"},
   {a="x", b="خ"},
   {a="d", b="د"},
   {a="r", b="ر"},
   {a="z", b="ز"},
   {a="s", b="س"},
   {a="f", b="ف"},
   {a="`", b="ع"},
   {a="f", b="ف"},
   {a="q", b="ق"},
   {a="k", b="ك"},
   {a="l", b="ل"},
   {a="m", b="م"},
   {a="n", b="ن"},
   {a="h", b="ه"},
   {a="w", b="و"},
   {a="y", b="ي"},
   {a="T", b="ة"},
   {a="u", b="ُ"},
   {a="a", b="َ"},
   {a="i", b="ِ"}
}

buckwalter = {
   --- hard coded madda: hold it for now
   {a="%|", b="@"},
   {a="M", b="@"}, -- BW safe
   {a="%_", b="--"}, -- taṭwīl
   -- prevent any unwanted šadda from being generated
   {a="bb", b="b|b"},
   {a="tt", b="t|t"},
   {a="vv", b="v|v"},
   {a="jj", b="j|j"},
   {a="HH", b="H|H"},
   {a="xx", b="x|x"},
   {a="dd", b="d|d"},
   {a="%*%*", b="*|*"},
   {a="VV", b="V|V"}, -- BW safe
   {a="rr", b="r|r"},
   {a="ss", b="s|s"},
   {a="%$%$", b="$|$"},
   {a="cc", b="c|c"}, -- BW safe
   {a="SS", b="S|S"},
   {a="DD", b="D|D"},
   {a="TT", b="T|T"},
   {a="ZZ", b="Z|Z"},
   {a="EE", b="E|E"},
   {a="gg", b="g|g"},
   {a="ff", b="f|f"},
   {a="qq", b="q|q"},
   {a="kk", b="k|k"},
   {a="ll", b="l|l"},
   {a="mm", b="m|m"},
   {a="nn", b="n|n"},
   {a="hh", b="h|h"},
   {a="ww", b="w|w"},
   {a="yy", b="y|y"},
   -- hamza begin
   -- look into this later on:
--   {a="%>a?A", b="@@@"}, -- hold this (madda)
--   {a="%>a\'([^uai])", b="@@@%1"}, -- hold this (madda)
   {a="a?A\'", b="@@"}, -- hold this (classic madda)
   {a="\'", b="|\"\'"},
   {a="C", b="|\"\'"}, -- BW safe
   {a="%>", b="a\"\'"},
   {a="O", b="a\"\'"}, -- BW safe
   {a="%&", b="w\"\'"},
   {a="W", b="w\"\'"}, -- BW safe
   {a="%<", b="i\"\'"},
   {a="I", b="i\"\'"}, -- BW safe
   {a="%]", b="y\"\'"},
   {a="Q", b="y\"\'"},
   -- hamza end
   -- trigraphs
   {a="^Aal%-?", b="al-"},
   {a="(%W)Aal%-?", b="%1al-"},
   {a="(%s)Aal%-?", b="%1al-"},
   {a="([%-%s])Al%-?", b="%1\'l-"},
   {a="^A", b="a"},
   {a="(%W)A", b="%1a"},
   {a="(%s)A", b="%1a"},
   {a="(al%-[%g])(%~)", b="%1"},
   {a="(\'l%-[%g])(%~)", b="%1"},
   -- digraphs begin
   {a="aA", b="A"},
   {a="uw([^%~])", b="U%1"},
   {a="iy([^%~])", b="I%1"},
   -- digraphs end
   -- madda: get it back now
--   {a="%@%@%@", b="\'A"},
   {a="%@%@", b="A\'"}, -- give back classic madda
   {a="%@", b="A\"\'"}, -- hard coded madda
   -- šadda:
   {a="([%g])(%~)", b="%1%1"},
   {a="%`", b="_a"},
   {a="e", b="_a"}, -- BW safe
   {a="v", b="_t"},
   {a="H", b=".h"},
   {a="%*", b="_d"},
   {a="V", b="_d"}, -- BW safe
   {a="%$", b="^s"},
   {a="c", b="^s"}, -- BW safe
   {a="S", b=".s"},
   {a="D", b=".d"},
   {a="T", b=".t"},
   {a="Z", b=".z"},
   {a="E", b="`"},
   {a="g", b=".g"},
   {a="p", b="T"},
   {a="N", b="uN"},
   {a="F", b="aN"},
   {a="K", b="iN"},
   {a="o", b="\""},
   {a="P", b="O"}, -- pass on to \arbnull
   -- hard-coded connective alif
   {a="%[", b="ٱ"},
   {a="L", b="ٱ"} -- BW safe
}

hamza = {
   -- next line for ʾiʿrāb hyphen
   {a="(')(%-)([uaiUAI])", b="%1%3"},
   -- next lines for ʾalif alone
   {a="(%.A)([uai]?)l%-(%^n)", b="ا%2ل%3"}, --additional (^n is lunar)
   {a="([%(%[%|%<%s%-O])(%.A)([uai]?)l%-(%^n)", b="%1ا%3%4"}, --additional (^n is lunar) --p
   {a="(%.A)([uai]?)l%-([%_%^%.]?[tdrzsnc])", b="ا%2ل%3%3"},
   {a="([%(%[%|%<%s%-O])(%.A)([uai]?)l%-([%_%^%.]?[tdrzsnc])", b="%1ا%3ل%4%4"}, --p
   {a="%.A", b="ا"},
   -- hard coded hamza
   {a="|\"'", b="ء"},
   {a="A\"'", b="آ"},
   {a="[au]\"'", b="أ"},
   {a="w\"'", b="ؤ"},
   {a="i\"'", b="إ"},
   {a="y\"'", b="ئ"},
   -- hamza takes tašdīd too
   {a="''([Uu])", b="ؤؤ%1"},
   {a="''([Aa])", b="أأ%1"},
   {a="''([Ii])", b="ئئ%1"},
   -- inseparable adverbial particle 'a- + 'a
   {a="\'(a)%-\'(a)", b="أ%1اأ%2"},
   -- initial long u and i (for a, see below)
   {a="%'%_U", b="أU"},
   {a="%'%_I", b="إI"},
   -- taḫfīfu 'l-hamza
   {a="'u'([^uaiUAI])", b="أU%1"},
   {a="'i'([^uaiUAI])", b="إI%1"},
   {a="([wf]a)%-\'([^uaiUAIl][^%-])", b="%1أ%2"},
   {a="^u'([^uaiUAI])", b="اU%1"},
   {a="([^uaiUAIYN][%s%(%[%<])u'([^uaiUAI])", b="%1اU%2"},
   {a="^i'([^uaiUAI])", b="اI%1"},
   {a="([^uaiUAIYN][%s%(%[%<])i'([^uaiUAI])", b="%1اI%2"},
   -- madda (historic writing below)
   {a="'a'([^uaiUAI])", b="آ%1"},
   {a="([^uiyUI])\'a?A([%_%^%.]?[%`%'btjghxdrzsfqklmnywAY])", b="%1آ%2"},
   {a="^\'a?A([%_%^%.]?[%`%'btjghxdrzsfqklmnywAY])", b="آ%1"},
   {a="\'a?A(O[%_%^%.]?[%`%'btjghxdrzsfqklmnywAY]-O)", b="آ"},
   {a="(%W)\'a?A([%_%^%.]?[%`%'btjghxdrzsfqklmnywAY])", b="%1آ%2"},
   {a="(A)(O%'[%S]-O)", b="آ"},
   {a="(A)(')(uN?%p*)$", b="aآء%3"},
   {a="(A)(')(uN?)(%p*%s)", b="aآء%3%4"},
   {a="(A)(')(iN?%p*)$", b="aآء%3"},
   {a="(A)(')(iN?)(%p*%s)", b="aآء%3%4"},
   {a="(A)(')([iI])", b="aآئ%3"}, -- historic madda
   {a="(A)(')(u)", b="aآؤ%3"}, -- historic madda
   {a="(A)(')", b="aآء"}, -- historic madda
   -- initial (needs both ^ and %W patterns)
   -- 'aw: the diphthong is to be resolved into 'awi' (next 8 lines)
   {a="^('aw)(O)('[%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1i"},
   {a="(%W)('aw)(O)('[%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1%2i"},
   {a="^('aw)(O)(\"?[uai])([%S]-O)", b="%1i"},
   {a="(%W)('aw)(O)(\"?[uai])([%S]-O)", b="%1%2i"},
   {a="^('aw)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1i%2%3"},
   {a="(%W)('aw)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1%2i%3%4"},
   {a="^('aw)(%s)([%(%[%|%<]?\"?[uai])", b="%1i%2%3"}, --p
   {a="(%W)('aw)(%s)([%(%[%|%<]?\"?[uai])", b="%1%2i%3%4"}, --p
   -- then the 'initial' rules for the remaining cases
   {a="^(')([ua])", b="أ%2"},
   {a="^(')(i)", b="إ%2"},
   -- consider replacing initial %W with [%s%(%[%<%-]:
   --   {a="(%W)(')([ua])", b="%1أ%3"},
   --   {a="(%W)(')(i)", b="%1إ%3"},
   {a="([%s%(%[%<%-])(')([ua])", b="%1أ%3"},
   {a="([%s%(%[%<%-])(')(i)", b="%1إ%3"},
   -- final
   -- mi'aT is special orthography (unlike ^say'aN and .zim'aN):
   -- {a="(%^sa%.?[yY])(\"?%|?)(%')(aN)", b="%1%2ئ%4"}, --new
   -- {a="(.zi?m)(%')(aN)", b="%1ئ%3"}, --new
   {a="(mi)(%')(a[TtH])", b="%1ائ%3"},
   {a="(mi)(%')(aN%_?[AY])", b="%1أ%3"},
   -- final hamzah is on the line after a letter of prolongation or a
   -- consonant with sukūn
   {a="([^Auai])(')(\"?[uai]N?)(%p*)$", b="%1ء%3%4"}, --new
   {a="([^Auai])(')(\"?[uai]N?)(%p*%s)", b="%1ء%3%4"},
-- u
   {a="(u)(')([uai]N?%p*)$", b="%1ؤ%3"},
   {a="(u)(')([uai]N?)(%p*%s)", b="%1ؤ%3%4"},
   {a="(u)(')(%p*)$", b="%1ؤ%3"},
   {a="(u)(')(%p*%s)", b="%1ؤ%3"},
-- a
   {a="(a)(')(A%p*)$", b="%1آ"},
   {a="(a)(')(A)(%p*%s)", b="%1آ%4"},
   {a="(a)(')([u]N?%p*)$", b="%1أ%3"},
   {a="(a)(')([u]N?)(%p*%s)", b="%1أ%3%4"},
   {a="(a)(')(a%p*)$", b="%1أ%3"},
   {a="(a)(')(a)(%p*%s)", b="%1أ%3%4"},
   {a="(a)(')(aN%p*)$", b="%1أً"},
   {a="(a)(')(aN)(%p*%s)", b="%1أً%4"},
   {a="(a)(')([i]N?%p*)$", b="%1إ%3"},
   {a="(a)(')([i]N?)(%p*%s)", b="%1إ%3%4"},
   {a="(a)(')(%p*)$", b="%1أ%3"},
   {a="(a)(')(%p*%s)", b="%1أ%3"},
-- i
   {a="(i)(')([uai]N?%p*)$", b="%1ئ%3"},
   {a="(i)(')([uai]N?)(%p*%s)", b="%1ئ%3%4"},
   {a="(i)(')(%p*)$", b="%1ئ%3"},
   {a="(i)(')(%p*%s)", b="%1ئ%3"},
--
   -- middle
   {a="([UIwy])(')", b="%1ء"}, --new
   -- {a="([Iy])(')", b="%1ئ"}, -- included in the above line
   -- hamza is alone after letters of prolongation or sukūn
   -- {a="([^uai])(')([uU])", b="%1ؤ%3"},
   -- {a="([^uai])(')(%_?[aAY])", b="%1أ%3"},
   -- {a="([^uai])(')([iI])", b="%1ئ%3"},
   {a="([^uai])(')(%_?[uaiUAYI])", b="%1ء%3"},
   {a="(u)(')([UI])", b="%1ء%3"},
   {a="(u)(')([u])", b="%1ؤ%3"},
   {a="(u)(')(%_?[aAY])", b="%1ؤ%3"},
   {a="(u)(')([i])", b="%1ئ%3"},
   {a="(a)(')(%_?[aAY])", b="%1أ%3"},
   {a="(a)(')([uU])", b="%1ؤ%3"},
   {a="(a)(')([iI])", b="%1ئ%3"},
   {a="(i)(')([UI])", b="%1ء%3"},
   {a="(i)(')(%_?[aAY])", b="%1ئ%3"},
   {a="(i)(')([u])", b="%1ئ%3"},
   {a="(i)(')([i])", b="%1ئ%3"},
   {a="(a)(')([^uaiUAI])", b="%1أ%3"},
   {a="(u)(')([^uaiUAI])", b="%1ؤ%3"},
   {a="(i)(')([^uaiUAI])", b="%1ئ%3"}
}

hamzaeasy = { -- differences marked below with 'easy'
   -- next line for ʾiʿrāb hyphen
   {a="(')(%-)([uaiUAI])", b="%1%3"},
   -- next lines for ʾalif alone (easy)
   {a="(%.A)([uai]?)l%-(%^n)", b="ا%2ل%3"}, --additional (^n is lunar)
   {a="([%(%[%|%<%s%-O])(%.A)([uai]?)l%-(%^n)", b="%1ا%3%4"}, --additional (^n is lunar) --p
   {a="(%.A)([uai]?)l%-([%_%^%.]?[tdrzsnc])", b="ا%2ل%3"},
   {a="([%(%[%|%<%s%-O])(%.A)([uai]?)l%-([%_%^%.]?[tdrzsnc])", b="%1ا%3ل%4"}, --p
   {a="%.A", b="ا"},
   -- hard coded hamza
   {a="|\"'", b="ء"},
   {a="A\"'", b="آ"},
   {a="[au]\"'", b="أ"},
   {a="w\"'", b="ؤ"},
   {a="i\"'", b="إ"},
   {a="y\"'", b="ئ"},
   -- hamza takes tašdīd too
   {a="''([Uu])", b="ؤؤ%1"},
   {a="''([Aa])", b="أأ%1"},
   {a="''([Ii])", b="ئئ%1"},
   -- inseparable adverbial particle 'a- + 'a
   {a="\'(a)%-\'(a)", b="أ%1اأ%2"},
   -- initial long u and i (for a, see below)
   {a="%'%_U", b="أU"},
   {a="%'%_I", b="إI"},
   -- taḫfīfu 'l-hamza
   {a="'u'([^uaiUAI])", b="أU%1"},
   {a="'i'([^uaiUAI])", b="إI%1"},
   {a="([wf]a)%-\'([^uaiUAIl][^%-])", b="%1أ%2"},
   {a="^u'([^uaiUAI])", b="اU%1"},
   {a="([^uaiUAIYN][%s%(%[%<])u'([^uaiUAI])", b="%1اU%2"},
   {a="^i'([^uaiUAI])", b="اI%1"},
   {a="([^uaiUAIYN][%s%(%[%<])i'([^uaiUAI])", b="%1اI%2"},
   -- madda (historic writing below)
   {a="'a'([^uaiUAI])", b="آ%1"},
   {a="([^uiyUI])\'a?A([%_%^%.]?[%`%'btjghxdrzsfqklmnywAY])", b="%1آ%2"},
   {a="^\'a?A([%_%^%.]?[%`%'btjghxdrzsfqklmnywAY])", b="آ%1"},
   {a="\'a?A(O[%_%^%.]?[%`%'btjghxdrzsfqklmnywAY]-O)", b="آ"},
   {a="(%W)\'a?A([%_%^%.]?[%`%'btjghxdrzsfqklmnywAY])", b="%1آ%2"},
   --easy (begin)
   {a="(A)(O%'[%S]-O)", b="ا"},
   {a="(A)(')(uN?%p*)$", b="aاء%3"},
   {a="(A)(')(uN?)(%p*%s)", b="aاء%3%4"},
   {a="(A)(')(iN?%p*)$", b="aاء%3"},
   {a="(A)(')(iN?)(%p*%s)", b="aاء%3%4"},
   {a="(A)(')([iI])", b="aائ%3"}, -- historic madda
   {a="(A)(')(u)", b="aاؤ%3"}, -- historic madda
   {a="(A)(')", b="aاء"}, -- historic madda
   --easy (end)
   -- initial (needs both ^ and %W patterns)
   -- 'aw: the diphthong is to be resolved into 'awi' (next 8 lines)
   {a="^('aw)(O)('[%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1i"},
   {a="(%W)('aw)(O)('[%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1%2i"},
   {a="^('aw)(O)(\"?[uai])([%S]-O)", b="%1i"},
   {a="(%W)('aw)(O)(\"?[uai])([%S]-O)", b="%1%2i"},
   {a="^('aw)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1i%2%3"},
   {a="(%W)('aw)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1%2i%3%4"},
   {a="^('aw)(%s)([%(%[%|%<]?\"?[uai])", b="%1i%2%3"},
   {a="(%W)('aw)(%s)([%(%[%|%<]?\"?[uai])", b="%1%2i%3%4"},
   -- then the 'initial' rules for the remaining cases
   {a="^(')([ua])", b="أ%2"},
   {a="^(')(i)", b="إ%2"},
   -- consider replacing initial %W with [%s%(%[%<%-]:
   --   {a="(%W)(')([ua])", b="%1أ%3"},
   --   {a="(%W)(')(i)", b="%1إ%3"},
   {a="([%s%(%[%<%-])(')([ua])", b="%1أ%3"},
   {a="([%s%(%[%<%-])(')(i)", b="%1إ%3"},
   -- final
   -- mi'aT is special orthography (unlike ^say'aN and .zim'aN)
   -- {a="(%^sa%.?[yY])(\"?%|?)(%')(aN)", b="%1%2ئ%4"}, --new
   -- {a="(.zi?m)(%')(aN)", b="%1ئ%3"}, --new
   {a="(mi)(%')(a[TtH])", b="%1ائ%3"},
   {a="(mi)(%')(aN%_?[AY])", b="%1أ%3"},
   -- easy (begin)
   -- The Munjid says that such words as radI'aN do not have the
   -- hamzah alone on the line, so take out the following two lines
   -- (final hamzah is on the line after a letter of prolongation or a
   -- consonant with sukūn)
   -- {a="([^Auai])(')(\"?[uai]N?)(%p*)$", b="%1ء%3%4"}, --new
   -- {a="([^Auai])(')(\"?[uai]N?)(%p*%s)", b="%1ء%3%4"},
   {a="([^Auai])(')(\"?aN)(%p*)$", b="%1ئ%3%4"}, --new
   {a="([^Auai])(')(\"?aN)(%p*%s)", b="%1ئ%3%4"}, --new
   {a="([^uai])(')(\"?a)(%p*)$", b="%1ء%3%4"}, --new
   {a="([^uai])(')(\"?a)(%p*%s)", b="%1ء%3%4"}, --new
   {a="([^uai])(')(\"?[ui]N?)(%p*)$", b="%1ء%3%4"}, --new
   {a="([^uai])(')(\"?[ui]N?)(%p*%s)", b="%1ء%3%4"}, --new
   --easy (end)
-- u
   {a="(u)(')([uai]N?%p*)$", b="%1ؤ%3"},
   {a="(u)(')([uai]N?)(%p*%s)", b="%1ؤ%3%4"},
   {a="(u)(')(%p*)$", b="%1ؤ%3"},
   {a="(u)(')(%p*%s)", b="%1ؤ%3"},
-- a
   {a="(a)(')(A%p*)$", b="%1آ"},
   {a="(a)(')(A)(%p*%s)", b="%1آ%4"},
   {a="(a)(')([u]N?%p*)$", b="%1أ%3"},
   {a="(a)(')([u]N?)(%p*%s)", b="%1أ%3%4"},
   {a="(a)(')(a%p*)$", b="%1أ%3"},
   {a="(a)(')(a)(%p*%s)", b="%1أ%3%4"},
   {a="(a)(')(aN%p*)$", b="%1أً"},
   {a="(a)(')(aN)(%p*%s)", b="%1أً%4"},
   {a="(a)(')([i]N?%p*)$", b="%1إ%3"},
   {a="(a)(')([i]N?)(%p*%s)", b="%1إ%3%4"},
   {a="(a)(')(%p*)$", b="%1أ%3"},
   {a="(a)(')(%p*%s)", b="%1أ%3"},
-- i
   {a="(i)(')([uai]N?%p*)$", b="%1ئ%3"},
   {a="(i)(')([uai]N?)(%p*%s)", b="%1ئ%3%4"},
   {a="(i)(')(%p*)$", b="%1ئ%3"},
   {a="(i)(')(%p*%s)", b="%1ئ%3"},
--
   -- middle
   {a="([Uw])(')", b="%1ء"}, --new
   {a="([Iy])(')", b="%1ئ"}, --easy
   {a="([^uai])(')([uU])", b="%1ؤ%3"},
   {a="([^uai])(')(%_?[aAY])", b="%1أ%3"},
   {a="([^uai])(')([iI])", b="%1ئ%3"},
   {a="(u)(')([uU])", b="%1ؤ%3"},
   {a="(u)(')(%_?[aAY])", b="%1ؤ%3"},
   {a="(u)(')([iI])", b="%1ئ%3"},
   {a="(a)(')(%_?[aAY])", b="%1أ%3"},
   {a="(a)(')([uU])", b="%1ؤ%3"},
   {a="(a)(')([iI])", b="%1ئ%3"},
   {a="(i)(')(%_?[aAY])", b="%1ئ%3"},
   {a="(i)(')([uU])", b="%1ئ%3"},
   {a="(i)(')([iI])", b="%1ئ%3"},
   {a="(a)(')([^uaiUAI])", b="%1أ%3"},
   {a="(u)(')([^uaiUAI])", b="%1ؤ%3"},
   {a="(i)(')([^uaiUAI])", b="%1ئ%3"}
}

tanwin = {
   -- assimilations (begin)
   {a="(O[%S]-)(%-?[uai]N[UI]?)(O)([rlmnwy])", b="%4%4"},
   {a="(%-?[uai]NU)(%s)([rlmnwy])", b="%1%2%3%3"},
   -- assimilations (end)
   {a="(O[%S]-)(%-?[uai]N[UI]?)(O)([uai])", b="%4"},
   {a="%-?uNU", b="ٌو"},
   {a="%-?aNU", b="ًوا"},
   {a="%-?iNU", b="ٍو"},
   -- assimilations (begin)
   {a="%-?(uN)(%s)([rlmnwy])", b="ٌ%2%3%3"},
   {a="(O[%S]-)(%-?aN)(_A)(O)([rlmnwy])", b="%5%5"},
   {a="(O[%S]-)(%-?aN)(Y)(O)([rlmnwy])", b="%5%5"},
   {a="%-?(aN)(_A)(%s)([rlmnwy])", b="ًى%3%4%4"},
   {a="%-?(aN)(Y)(%s)([rlmnwy])", b="ًى%3%4%4"},
   {a="([TH])%-?(aN)(%s)([rlmnwy])", b="%1ً%3%4%4"},
   {a="(ء)%-?(aN)(%s)([rlmnwy])", b="%1%2%3%4%4"}, --new
   {a="([^TAH])%-?(aN)(%s)([rlmnwy])", b="%1ًا%3%4%4"},
   {a="%-?(iNI?)(%s)([rlmnwy])", b="ٍ%2%3%3"},
   -- assimilations (end)
   {a="(O[%S]-)(%-?aN)(_A)(O)([uai])", b="%5"},
   {a="(O[%S]-)(%-?aN)(Y)(O)([uai])", b="%5"},
   -- quoted tanwīn (begin)
   {a="%-?(\"uN)", b=""},
   {a="(B)%-?(\"aN)", b="%1"},
   {a="%-?(\"aN)(_A)", b="ى"},
   {a="%-?(\"aN)(Y)", b="ى"},
   {a="([TH])%-?(\"aN)", b="%1"},
   {a="([اآ])(ء)%-?(\"aN)", b="%1%2"}, --new
   {a="([^TAH])%-?(\"aN)", b="%1ا"},
   {a="%-?(\"iNI?)", b=""},
   -- quoted tanwīn (end)
   {a="%-?(uN)", b="ٌ"},
   {a="(B)%-?(aN)", b="%1ً"},
   -- needed by \arbcolor:
   {a="%-?(aN)(O[%S]-%_AO)", b="ً"},
   {a="%-?(aN)(O[%S]-YO)", b="ً"},
   {a="(O[%S]-[TH]O)%-?(aN)", b="ً"},
   {a="(O[%S]-)([اآ])(ء)(O)%-?(aN)", b="ً"}, --new
   {a="(O[%S]-[^TAH]O)%-?(aN)", b="ًا"},
   --
   {a="%-?(aN)(_A)", b="ًى"},
   {a="%-?(aN)(Y)", b="ًى"},
   {a="([TH])%-?(aN)", b="%1ً"},
   {a="([اآ])(ء)%-?(aN)", b="%1%2ً"}, --new
   {a="([^TAH])%-?(aN)", b="%1ًا"},
   {a="%-?(iNI?)", b="ٍ"}
}

tanwineasy = { -- 'easy' requires some lines to be taken out:
   -- assimilations (begin)
--   {a="(O[%S]-)(%-?[uai]N[UI]?)(O)([rlmnwy])", b="%4%4"},
--   {a="(%-?[uai]NU)(%s)([rlmnwy])", b="%1%2%3%3"},
   -- assimilations (end)
   {a="(O[%S]-)(%-?[uai]N[UI]?)(O)([uai])", b="%4"},
   {a="%-?uNU", b="ٌو"},
   {a="%-?aNU", b="ًوا"},
   {a="%-?iNU", b="ٍو"},
   -- assimilations (begin)
--   {a="%-?(uN)(%s)([rlmnwy])", b="ٌ%2%3%3"},
--   {a="(O[%S]-)(%-?aN)(_A)(O)([rlmnwy])", b="%5%5"},
--   {a="(O[%S]-)(%-?aN)(Y)(O)([rlmnwy])", b="%5%5"},
--   {a="%-?(aN)(_A)(%s)([rlmnwy])", b="ًى%3%4%4"},
--   {a="%-?(aN)(Y)(%s)([rlmnwy])", b="ًى%3%4%4"},
--   {a="([TH])%-?(aN)(%s)([rlmnwy])", b="%1ً%3%4%4"},
--   {a="(ء)%-?(aN)(%s)([rlmnwy])", b="%1%2%3%4%4"}, --new
--   {a="([^TAH])%-?(aN)(%s)([rlmnwy])", b="%1ًا%3%4%4"},
--   {a="%-?(iNI?)(%s)([rlmnwy])", b="ٍ%2%3%3"},
   -- assimilations (end)
   {a="(O[%S]-)(%-?aN)(_A)(O)([uai])", b="%5"},
   {a="(O[%S]-)(%-?aN)(Y)(O)([uai])", b="%5"},
   -- quoted tanwīn (begin)
   {a="%-?(\"uN)", b=""},
   {a="(B)%-?(\"aN)", b="%1"},
   {a="%-?(\"aN)(_A)", b="ى"},
   {a="%-?(\"aN)(Y)", b="ى"},
   {a="([TH])%-?(\"aN)", b="%1"},
   {a="([اآ])(ء)%-?(\"aN)", b="%1%2"}, --new
   {a="([^TAH])%-?(\"aN)", b="%1ا"},
   {a="%-?(\"iNI?)", b=""},
   -- quoted tanwīn (end)
   {a="%-?(uN)", b="ٌ"},
   {a="(B)%-?(aN)", b="%1ً"},
   -- needed by \arbcolor:
   {a="%-?(aN)(O[%S]-%_AO)", b="ً"},
   {a="%-?(aN)(O[%S]-YO)", b="ً"},
   {a="(O[%S]-[TH]O)%-?(aN)", b="ً"},
   {a="(O[%S]-)([اآ])(ء)(O)%-?(aN)", b="ً"}, --new
   {a="(O[%S]-[^TAH]O)%-?(aN)", b="ًا"},
   --
   {a="%-?(aN)(_A)", b="ًى"},
   {a="%-?(aN)(Y)", b="ًى"},
   {a="([TH])%-?(aN)", b="%1ً"},
   {a="([اآ])(ء)%-?(aN)", b="%1%2ً"}, --new
   {a="([^TAH])%-?(aN)", b="%1ًا"},
   {a="%-?(iNI?)", b="ٍ"}
}

trigraphs = { -- trigraphs or more
   -- ʾalif al-waṣl: put it back on with \arbnull
   {a="(O[%S]-)([%'a]l%-)(O)(\"[uai])", b="ٱ"},
   {a="(O[%S]-)([%'a]l%-)(O)([uai])", b="ا"},
   -- 'llatI / 'llad_I
   {a="^'ll(a)([%_]?[dt])", b="الّ%1%2"},
   {a="([%(%[%|%<%s%-])'ll(a)([%_]?[dt])", b="%1الّ%2%3"}, --p
   -- law: the diphthong is to be resolved into 'awi' (next 8 lines)
   {a="^(law)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1i"},
   {a="(%W)(law)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1%2i"},
   {a="^(law)(O)(\"?[uai])([%S]-O)", b="%1i"},
   {a="(%W)(law)(O)(\"?[uai])([%S]-O)", b="%1%2i"},
   {a="^(law)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1i%2%3"},
   {a="(%W)(law)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1%2i%3%4"},
   {a="^(law)(%s)([%(%[%|%<]?\"?[uai])", b="%1i%2%3"}, --p
   {a="(%W)(law)(%s)([%(%[%|%<]?\"?[uai])", b="%1%2i%3%4"}, --p
   -- al- + lām
   {a="^(a)l%-(l)", b="ا%1ل%2%2"},
   {a="([%(%[%|%<%s%-O])(a)l%-(l)", b="%1ا%2ل%3%3"}, --p
   -- al- + solar consonant ('c' and '^n' are additional characters)
   {a="^(a)l%-(%^n)", b="ا%1ل%2"}, -- ^n is lunar
   {a="([%(%[%|%<%s%-O])(a)l%-(%^n)", b="%1ا%2ل%3"},-- ^n is lunar --p
   {a="^(a)l%-([%_%^%.]?[tdrzsnc])", b="ا%1ل%2%2"},
   {a="([%(%[%|%<%s%-O])(a)l%-([%_%^%.]?[tdrzsnc])", b="%1ا%2ل%3%3"}, --p
   -- assim. art. + solar consonant ('c' and '^n' are additional characters)
   {a="^(a)(%^n)%-", b="ا%1ل"}, -- ^n is lunar
   {a="([%(%[%|%<%s%-O])(a)(%^n)%-", b="%1ا%2ل"},-- ^n is lunar --p
   {a="^(a)([%_%^%.]?[tdrzsnc])%-", b="ا%1ل%2"},
   {a="([%(%[%|%<%s%-O])(a)([%_%^%.]?[tdrzsnc])%-", b="%1ا%2ل%3"}, --p
   -- al- + initial unstable hamza
   {a="^(a)l%-(\")([uai])", b="ا%1ل%3ٱ"},
   {a="([%(%[%|%<%s%-O])(a)l%-(\")([uai])", b="%1ا%2ل%4ٱ"}, --p
   {a="^(a)l%-([uai])", b="ا%1ل%2ا"},
   {a="([%(%[%|%<%s%-O])(a)l%-([uai])", b="%1ا%2ل%3ا"}, --p
   -- li-/la- + art. + initial unstable hamza is a special orthography
   {a="l([ai])%-l%-(\")([uai])", b="ل%1ل%3ٱ"},
   {a="l([ai])%-l%-([uai])", b="ل%1ل%2ا"},
   -- al- + lunar consonant (i.e. what remains)
   {a="^(a)l%-", b="ا%1ل"},
   {a="([%(%[%|%<%s%-O])(a)l%-", b="%1ا%2ل"}, --p
   -- diphthongs to be resolved before ʾalif conjunctionis
   {a="(aW)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="awuا"},
   {a="(aw)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1u"},
   {a="(ay)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1i"},
   {a="(aW)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="awuا%2%3"},
   {a="(aw)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1u%2%3"},
   {a="(ay)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1i%2%3"},
   -- art. with waṣla + lām
   {a="'l%-(l)", b="ال%1%1"},
   -- art. with waṣla + solar consonant
   -- ('c' and '^n' are additional characters)
   {a="'l%-(%^n)", b="ال%1"}, -- ^n is lunar
   {a="'l%-([%_%^%.]?[tdrzsnc])", b="ال%1%1"},
   -- li-/la- + art. + lām
   {a="l([ai])%-l%-(l)", b="ل%1%2%2"},
   -- assim. art. with waṣla + solar consonant ('c' and '^n' are
   -- additional characters)   
   {a="'(%^n)%-", b="ال"}, -- ^n is lunar
   {a="'([%_%^%.]?[tdrzsnc])%-", b="ال%1"},
   -- li-/la- + art. + solar consonant is a special orthography
   -- ('c' and '^n' are additional characters)
   {a="l([ai])%-l%-(%^n)", b="ل%1ل%2"}, -- '^n' is lunar
   {a="l([ai])%-l%-([%_%^%.]?[tdrzsnc])", b="ل%1ل%2%2"},
   -- li-/la + assim. art. + solar consonant is a special orthography
   -- ('c' and '^n' are additional characters)
   {a="l([ai])%-(%^n)%-(%^n)", b="ل%1ل%3"}, -- ^n is lunar
   {a="l([ai])%-([%_%^%.]?[tdrzsnc])%-([%_%^%.]?[tdrzsnc])", b="ل%1ل%3%3"},
   -- art. with waṣla + initial unstable hamza
   {a="'l%-(\")([uai])", b="ال%2ٱ"},
   {a="'l%-([uai])", b="ال%1ا"},   
   -- art. with waṣla + lunar consonant (i.e. what remains)
   {a="'l%-", b="ال"},
   -- the silent wāw
   {a="uU(%p*)$", b="uو%1"},
   {a="uU(%p*%s)", b="uو%1"},
   {a="aU(%p*)$", b="aو%1"},
   {a="aU(%p*%s)", b="aو%1"},
   {a="iU(%p*)$", b="iو%1"},
   {a="iU(%p*%s)", b="iو%1"},
   -- words ending in -āT with silent wāw/yāʾ
   {a="(_a)UA", b="%1وا"},
   {a="(_a)U", b="%1و"},
   {a="(_a)I", b="%1ي"}
}

idgham = {
   -- assimilations
   {a="(n)(%s)([rlmnwy])", b="%1%2%3%3"},
   {a="(n)(O)([rlmnwy])([%S]-O)", b="%3"}
}

trigraphseasy = { -- differences marked below with 'easy'
   -- ʾalif al-waṣl: put it back on with \arbnull
   {a="(O[%S]-)([%'a]l%-)(O)(\"[uai])", b="ٱ"},
   {a="(O[%S]-)([%'a]l%-)(O)([uai])", b="ا"},
   -- Allah (easy)
   {a="l%-l_ah", b="l-ll_ah"},
   -- 'llatI / 'llad_I
   {a="^'ll(a)([%_]?[dt])", b="الّ%1%2"},
   {a="([%(%[%|%<%s%-])'ll(a)([%_]?[dt])", b="%1الّ%2%3"}, --p
   -- law: the diphthong is to be resloved into 'awi' (next 8 lines)
   {a="^(law)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1i"},
   {a="(%W)(law)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1%2i"},
   {a="^(law)(O)(\"?[uai])([%S]-O)", b="%1i"},
   {a="(%W)(law)(O)(\"?[uai])([%S]-O)", b="%1%2i"},
   {a="^(law)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1i%2%3"},
   {a="(%W)(law)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1%2i%3%4"},
   {a="^(law)(%s)([%(%[%|%<]?\"?[uai])", b="%1i%2%3"}, --p
   {a="(%W)(law)(%s)([%(%[%|%<]?\"?[uai])", b="%1%2i%3%4"}, --p
   -- al- + lām (easy)
   {a="^(a)l%-(l)", b="ا%1ل%2"},
   {a="([%(%[%|%<%s%-O])(a)l%-(l)", b="%1ا%2ل%3"}, --p
   -- al- + solar consonant (easy) ('c' and '^n' are additional characters)
   {a="^(a)l%-(%^n)", b="ا%1ل%2"}, -- ^n is lunar
   {a="([%(%[%|%<%s%-O])(a)l%-(%^n)", b="%1ا%2ل%3"}, -- ^n is lunar --p
   {a="^(a)l%-([%_%^%.]?[tdrzsnc])", b="ا%1ل%2"},
   {a="([%(%[%|%<%s%-O])(a)l%-([%_%^%.]?[tdrzsnc])", b="%1ا%2ل%3"}, --p
   -- assim. art. + solar consonant (easy) ('c' and '^n' are
   -- additional characters)
   {a="^(a)(%^n)%-", b="ا%1ل"}, -- ^n is lunar
   {a="([%(%[%|%<%s%-O])(a)(%^n)%-", b="%1ا%2ل"}, -- ^n is lunar --p
   {a="^(a)([%_%^%.]?[tdrzsnc])%-", b="ا%1ل"},
   {a="([%(%[%|%<%s%-O])(a)([%_%^%.]?[tdrzsnc])%-", b="%1ا%2ل"}, --p
   -- al- + initial unstable hamza
   {a="^(a)l%-(\")([uai])", b="ا%1ل%3ٱ"},
   {a="([%(%[%|%<%s%-O])(a)l%-(\")([uai])", b="%1ا%2ل%4ٱ"}, --p
   {a="^(a)l%-([uai])", b="ا%1ل%2ا"},
   {a="([%(%[%|%<%s%-O])(a)l%-([uai])", b="%1ا%2ل%3ا"}, --p
   -- li-/la- + art. + initial unstable hamza is a special orthography
   {a="l([ai])%-l%-(\")([uai])", b="ل%1ل%3ٱ"},
   {a="l([ai])%-l%-([uai])", b="ل%1ل%2ا"},
   -- al- + lunar consonant (i.e. what remains)
   {a="^(a)l%-", b="ا%1ل"},
   {a="([%(%[%|%<%s%-O])(a)l%-", b="%1ا%2ل"}, --p
   -- diphthongs to be resolved before ʾalif conjunctionis
   {a="(aW)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="awuا"},
   {a="(aw)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1u"},
   {a="(ay)(O)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)([%S]-O)", b="%1i"},
   {a="(aW)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="awuا%2%3"},
   {a="(aw)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1u%2%3"},
   {a="(ay)(%s)(['][%_%^%.]?[l'btjghxdrzs`fqkmnwy]%-)", b="%1i%2%3"},
   -- art. with waṣla + lām (easy)
   {a="'l%-(l)", b="ال%1"},
   -- art. with waṣla + solar consonant (easy)
   -- ('c' and '^n' are additional characters)
   {a="'l%-(%^n)", b="ال%1"}, -- ^n is lunar
   {a="'l%-([%_%^%.]?[tdrzsnc])", b="ال%1"},
   -- li-/la- + art. + lām (easy)
   {a="l([ai])%-l%-(l)", b="ل%1%2"},
   -- assim. art. with waṣla + solar consonant (easy)
   -- ('c' and '^n' are additional characters)
   {a="'(%^n)%-", b="ال"}, -- ^n is lunar
   {a="'([%_%^%.]?[tdrzsnc])%-", b="ال"},
   -- li-/la- + art. + solar consonant is a special orthography (easy)
   -- ('c' and '^n' are additional characters)
   {a="l([ai])%-l%-(%^n)", b="ل%1ل%2"}, -- ^n is lunar
   {a="l([ai])%-l%-([%_%^%.]?[tdrzsnc])", b="ل%1ل%2"},
   -- li-/la + assim. art. + solar consonant is a special orthography (easy)
   -- ('c' and '^n' are additional characters)
   {a="l([ai])%-(%^n)%-(%^n)", b="ل%1ل%3"}, -- ^n is lunar
   {a="l([ai])%-([%_%^%.]?[tdrzsnc])%-([%_%^%.]?[tdrzsnc])", b="ل%1ل%3"},
   -- art. with waṣla + initial unstable hamza
   {a="'l%-(\")([uai])", b="ال%2ٱ"},
   {a="'l%-([uai])", b="ال%1ا"},
   -- art. with waṣla + lunar consonant (i.e. what remains)
   {a="'l%-", b="ال"},
   -- the silent wāw
   {a="uU(%p*)$", b="uو%1"},
   {a="uU(%p*%s)", b="uو%1"},
   {a="aU(%p*)$", b="aو%1"},
   {a="aU(%p*%s)", b="aو%1"},
   {a="iU(%p*)$", b="iو%1"},
   {a="iU(%p*%s)", b="iو%1"},
   -- words ending in -āT with silent wāw/yāʾ
   {a="(_a)UA", b="%1وا"},
   {a="(_a)U", b="%1و"},
   {a="(_a)I", b="%1ي"}
}

digraphs = {
   -- ʾiʿrāb: straight double quote must be discarded
   {a="(%-)(\"?[UI]na)(%p*%s)", b="%2%3"},
   {a="(%-)(\"?[UI]na)(%p*)$", b="%2%3"},
   {a="(%-)(\"?At[ui])(%p*%s)", b="%2%3"},
   {a="(%-)(\"?At[ui])(%p*)$", b="%2%3"},
   {a="(%-)(\"?Ani)(%p*%s)", b="%2%3"},
   {a="(%-)(\"?Ani)(%p*)$", b="%2%3"},   
   {a="(%-)(\"?ayni)(%p*%s)", b="%2%3"},
   {a="(%-)(\"?ayni)(%p*)$", b="%2%3"},
   {a="(%-)(\"?[uai])(%p*%s)", b="%2%3"},
   {a="(%-)(\"?[uai])(%p*)$", b="%2%3"},
   -- ʾiʿrāb (end)
   -- initial straight double quote gives a connective ʾalif
   {a="^\"[uai]", b="ٱ"},
   {a="([%(%[%|%<%s%-])\"[uai]", b="%1ٱ"}, --p
   -- diphthongs to be resolved before ʾalif conjunctionis
   {a="(aW)(O)(\"?[uai])([%S]-O)", b="awuا"},
   {a="(aW)(%s)([%(%[%|%<]?)([uai])", b="awuا%2%3%4"}, --p
   {a="(aw)(O)(\"?[uai])([%S]-O)", b="%1u"},
   {a="(aw)(%s)([%(%[%|%<]?)(\"?[uai])", b="%1u%2%3ا"}, --p
   {a="(ay)(O)(\"?[uai])([%S]-O)", b="%1i"},
   {a="(ay)(%s)([%(%[%|%<]?)(\"?[uai])", b="%1i%2%3ا"}, --p
   -- hyphen + initial alif without hamza:
   {a="([uai]%-)(\"?[uai])([%^%_%.%`]?)([%aإأؤئ])", b="%1ا%3%4"},
   -- initial alif without hamza
   {a="^([%(%[%|%<]?)(\"?[uai])", b="%1ا%2"}, --p
   -- initial alif without hamza
   {a="(O[%S]-)([uaiUAIY])(O)(\"?[uai])", b="ا"},
   {a="(%s)([%(%[%|%<]?)(\"?[uai])", b="%1%2ا"}, --p
   {a="%-%-", b="ـ"},
   {a="ؤؤ", b="ؤّ"},
   {a="أأ", b="أّ"},
   {a="ئئ", b="ئّ"},
   {a="bb", b="بّ"},
   {a="BB", b="ـّ"},
   {a="([%_%^%.])([tghdsz])([tghdsz])", b="%1%2|%3"},
   -- same as above for additional characters:
   {a="([%_%^%.])([cn])([cn])", b="%1%2|%3"},
   {a="tt", b="تّ"},
   {a="%_t%_t", b="ثّ"},
   {a="jj", b="جّ"},
   {a="%^g%^g", b="جّ"},
   {a="%.h%.h", b="حّ"},
   {a="xx", b="خّ"},
   {a="%_h%_h", b="خّ"},
   {a="dd", b="دّ"},
   {a="%_d%_d", b="ذّ"},
   {a="rr", b="رّ"},
   {a="zz", b="زّ"},
   {a="ss", b="سّ"},
   {a="%^s%^s", b="شّ"},
   {a="%.s%.s", b="صّ"},
   {a="%.d%.d", b="ضّ"},
   {a="%.t%.t", b="طّ"},
   {a="%.z%.z", b="ظّ"},
   {a="%`%`", b="عّ"},
   {a="%.g%.g", b="غّ"},
   {a="ff", b="فّ"},
   {a="qq", b="قّ"},
   {a="kk", b="كّ"},
   {a="ll", b="لّ"},
   {a="mm", b="مّ"},
   {a="nn", b="نّ"},
   {a="hh", b="هّ"},
   {a="ww", b="وّ"},
   {a="yy", b="يّ"},
   {a="%.y%.y", b="ىّ"},
   -- additional characters + šaddah (begin)
   {a="pp", b="پّ"},
   {a="vv", b="ڤّ"},
   {a="gg", b="گّ"},
   {a="%^c%^c", b="چّ"},
   {a="%^z%^z", b="ژّ"},
   {a="%^n%^n", b="ڭّ"},
   -- additional characters + šaddah (end)
   {a="_t", b="ث"},
   {a="%^g", b="ج"},
   {a="%.h", b="ح"},
   {a="_h", b="خ"},
   {a="_d", b="ذ"},
   {a="%^s", b="ش"},
   {a="%.s", b="ص"},
   {a="%.d", b="ض"},
   {a="%.t", b="ط"},
   {a="%.z", b="ظ"},
   {a="%.g", b="غ"},
   {a="%.y", b="ى"},
   -- additional characters (begin)
   {a="%^c", b="چ"},
   {a="%^z", b="ژ"},
   {a="%^n", b="ڭ"},
   -- additional characters (end)
   {a="(U)(A)", b="%1ا"},
   {a="WA", b="وا"},
   {a="(a)W\"", b="%1وْا"},
   {a="(a)W", b="%1وا"},
   {a="_A", b="aى"},
   {a="_u", b="ٗ"},
   {a="_a", b="ٰ"},
   {a="_i", b="ٖ"},
   {a="%.b", b="ٮ"},
   {a="%.f", b="ڡ"},
   {a="%.q", b="ٯ"},
   {a="%.k", b="ک"},
   {a="%.n", b="ں"},
   {a="%^d", b="ڊ"}
}

single = {
   {a="b", b="ب"},
   {a="t", b="ت"},
   {a="j", b="ج"},
   {a="x", b="خ"},
   {a="d", b="د"},
   {a="r", b="ر"},
   {a="z", b="ز"},
   {a="s", b="س"},
   {a="f", b="ف"},
   {a="`", b="ع"},
   {a="f", b="ف"},
   {a="q", b="ق"},
   {a="k", b="ك"},
   {a="l", b="ل"},
   {a="m", b="م"},
   {a="n", b="ن"},
   {a="h", b="ه"},
   {a="w", b="و"},
   {a="y", b="ي"},
   {a="T", b="ة"},
   -- additional characters (begin)
   {a="H", b="ه"},
   {a="p", b="پ"},
   {a="v", b="ڤ"},
   {a="g", b="گ"},
   -- additional characters (end)
   {a="\"$", b="ْ"},
   {a="\"(%W)", b="ْ%1"},
   {a="\"([^uaiUAI])", b="ْ%1"},
   {a="o", b="ْ"}, -- hard-coded sukūn
   {a="([^0-9])%-([^0-9])", b="%1%2"},
   {a="B", b="ـ"}
}

longv = {
   {a="\"A", b="ا"},
   {a="\"U", b="و"},
   {a="\"I", b="ي"},
   {a="\"Y", b="ى"},
   {a="A", b="َا"},
   {a="U", b="ُو"},
   {a="I", b="ِي"},
   {a="aY", b="aى"},
   {a="iY", b="iى"},
   {a="Y", b="aى"}
}

shortv = {
   {a="\"u", b=""},
   {a="\"a", b=""},
   {a="\"i", b=""},
   {a="%-?%.u", b="ُ"},
   {a="%-?%.a", b="َ"},
   {a="%-?%.i", b="ِ"},
   {a="u", b="ُ"},
   {a="a", b="َ"},
   {a="i", b="ِ"}
}

punctuationhb = {
   {a="%(%(", b="﴿"},
   {a="%)%)", b="﴾"},
   {a="%.", b="."},
   -- replaced with the next two rules to make the Arabic comma work
   --   after \abraces{}
--   {a="([^0-9])%,", b="%1،"},
   {a="%,", b="،"},
   {a="([%d])%،", b="%1,"},
   {a="%?", b="؟"},
   {a="%;", b="؛"},
}

punctuation = {
   {a="%(%(", b="﴿"},
   {a="%)%)", b="﴾"},
   {a="%(", b="+@("},
   {a="%)", b="-@("},
   {a="%+%@%(", b=")"},
   {a="%-%@%(", b="("},
   {a="%<", b="+@<"},
   {a="%>", b="-@<"},
   {a="%+%@%<", b=">"},
   {a="%-%@%<", b="<"},
   {a="%[", b="+@["},
   {a="%]", b="-@["},
   {a="%+%@%[", b="]"},
   {a="%-%@%[", b="["},
   {a="%.", b="."},
   -- replaced with the next two rules to make the Arabic comma work
   --   after \abraces{}
--   {a="([^0-9])%,", b="%1،"},
   {a="%,", b="،"},
   {a="([%d])%،", b="%1,"},
   {a="%?", b="؟"},
   {a="%;", b="؛"},
}

null = {
   {a="%&", b="‍"}, -- That is ^^^^200d, the zero-width joiner
   {a="%|", b=""},
   {a="^%-", b=""},
   {a="([^0-9])(%-)", b="%1"},
   {a="O[%S]-O", b=""},
   {a="[%^%_](.)", b=">??<%1"}
}