Fallbacklist

return {   -- crh (Crimean Tatar) cluster: crh-cyrl , crh-latn -> crh (Crimean Tatar)  ['crh']        = {'crh-latn'},  ['crh-cyrl']   = {'crh'},   ['crh-latn']   = {'crh'},    -- de (German) cluster:  ['als']        = {'gsw', 'de'},    -- Alemannisch  ['bar']        = {'de'},           -- Bavarian  ['de-at']      = {'de'},           -- Austrian German  ['de-ch']      = {'de'},           -- Swiss High German  ['de-formal']  = {'de'},           -- German (formal address)  ['dsb']        = {'de'},           -- Lower Sorbian  ['frr']        = {'de'},           -- Northern Frisian  ['hsb']        = {'de'},           -- Upper Sorbian  ['ksh']        = {'de'},           -- Colognian  ['lb']         = {'de'},           -- Luxembourgish  ['nds']        = {'nds-nl', 'de'}, -- Low German  ['nds-nl']     = {'nds', 'nl'},    -- Low Saxon (Netherlands)  ['pdc']        = {'de'},           -- Deitsch  ['pdt']        = {'nds', 'de'},    -- Plautdietsch  ['pfl']        = {'de'},           -- Pälzisch  ['sli']        = {'de'},           -- Lower Silesian  ['stq']        = {'de'},           -- Seeltersk  ['vmf']        = {'de'},           -- Upper Franconian    -- es (Spanish) cluster  ['an']         = {'es'},       -- Aragonese  ['arn']        = {'es'},       -- Mapuche  ['ay']         = {'es'},       -- Aymara  ['cbk-zam']    = {'es'},       -- Chavacano de Zamboanga  ['gn']         = {'es'},       -- Guarani  ['lad']        = {'es'},       -- Ladino  ['nah']        = {'es'},       -- Nahuatl  ['qu']         = {'es'},       -- Quechua  ['qug']        = {'qu', 'es'}, -- Runa shimi    -- et (Estonian) cluster  ['liv']         = {'et'},  -- Līvõ kēļ  ['vep']         = {'et'},  -- Veps  ['vro']         = {'et'},  -- Võro  ['fio-vro']     = {'vro'}, -- Võro   -- fa (Persian) cluster  ['bcc']        = {'fa'},  -- Southern Balochi  ['bqi']        = {'fa'},  -- Bakhtiari  ['glk']        = {'fa'},  -- Gilaki  ['mzn']        = {'fa'},  -- Mazandarani    -- fi (Finnish) cluster:  ['fit']        = {'fi'}, -- meänkieli  ['vot']        = {'fi'}, -- Votic    -- fr (French) cluster:  ['bm']         = {'fr'}, -- Bambara  ['br']         = {'fr'}, -- Breton  ['co']         = {'fr'}, -- Corsican  ['ff']         = {'fr'}, -- Fulah  ['frc']        = {'fr'}, -- Cajun French  ['frp']        = {'fr'}, -- Franco-Provençal  ['ht']         = {'fr'}, -- Haitian  ['ln']         = {'fr'}, -- Lingala  ['mg']         = {'fr'}, -- Malagasy  ['pcd']        = {'fr'}, -- Picard  ['sg']         = {'fr'}, -- Sango  ['ty']         = {'fr'}, -- Tahitian  ['wa']         = {'fr'}, -- Walloon  ['wo']         = {'fr'}, -- Wolof   -- hi (Hindi) cluster  ['anp']         = {'hi'}, -- Angika  ['may']         = {'hi'}, -- Maithili  ['sa']          = {'hi'}, -- Sanskrit   -- hif (Fiji Hindi) cluster: hif-deva , hif-latn -> hif (Fiji Hindi)  ['hif']        = {'hif-latn'},  ['hif-deva']   = {'hif'},   ['hif-latn']   = {'hif'},     -- id (Indonesian) cluster  ['min']        = {'id'},       -- Minangkabau  ['ace']        = {'id'},       -- Achinese  ['bug']        = {'id'},       -- Buginese  ['bjn']        = {'id'},       -- Banjar  ['jv']         = {'id'},       -- Javanese  ['su']         = {'id'},       -- Sundanese  ['map-bms']    = {'jv', 'id'}, -- Basa Banyumasan    -- ike (Eastern Canadian Inuktitut) cluster: ike-cans , ike-latn -> ike (Eastern Canadian Inuktitut)  ['ike-cans']   = {'ik'},   ['ike-latn']   = {'ik'},     -- it (Italian) cluster  ['egl']        = {'it'}, -- Emiliàn  ['eml']        = {'it'}, -- Emiliano-Romagnolo  ['fur']        = {'it'}, -- Friulian  ['lij']        = {'it'}, -- Ligure  ['lmo']        = {'it'}, -- lumbaart  ['nap']        = {'it'}, -- Neapolitan  ['pms']        = {'it'}, -- Piedmontese  ['rgn']        = {'it'}, -- Romagnol  ['scn']        = {'it'}, -- Sicilian  ['vec']        = {'it'}, -- vèneto    -- kk (Kazakh) cluster:  -- kk-arab , kk-cyrl , kk-latn , kk-cn , kk-kz , kk-tr -> kk (Kazakh)  ['kk']         = {'kk-cyrl'},                  -- Kazakh  ['kk-arab']    = {'kk-cyrl', 'kk'},            -- Kazakh (Arabic script)  ['kk-cn']      = {'kk-arab', 'kk-cyrl', 'kk'}, -- Kazakh (China)  ['kk-cyrl']    = {'kk'},                       -- Kazakh (Cyrillic script)  ['kk-kz']      = {'kk', 'kk-cyrl'},            -- Kazakh (Kazakhstan)  ['kk-latn']    = {'kk'},                       -- Kazakh (Latin script)  ['kk-tr']      = {'kk-latn', 'kk'},            -- Kazakh (Turkey)  ['kaa']        = {'kk-latn', 'kk-cyrl'},       -- Kara-Kalpak    -- ku (Kurdish) cluster: ku-latn , ku-arab -> ku (Kurdish)  ['ku']         = {'ku-latn'},  ['ku-arab']    = {'ckb', 'ku'},  -- كوردي (عەرەبی)  ['ku-latn']    = {'ku'},  ['ckb']        = {'ku'},    -- nl (Dutch) cluster  ['af']         = {'nl'}, -- Afrikaans  ['fy']         = {'nl'}, -- Western Frisian  ['li']         = {'nl'}, -- Liechtenstein  ['nl-informal']= {'nl'}, -- Nederlands (informeel)  ['vls']        = {'nl'}, -- Vlaams  ['zea']        = {'nl'}, -- Zeeuws    --pl (Polish) cluster  ['csb']        = {'pl'}, -- Kashubian  ['szl']        = {'pl'}, -- Silesian    -- pt (Portuguese) cluster  ['gl']           = {'pt'},            -- Galician  ['mwl']          = {'pt'},            -- Mirandese  ['pt-br']        = {'pt'},            -- Brazilian Portuguese    -- ro (Romanian) cluster  ['mo']           = {'ro'},       -- Moldavian  ['rmy']          = {'ro'},       -- Romani    -- ru (Russian) cluster  ['ab']           = {'ru'},            -- Abkhazian  ['av']           = {'ru'},            -- Avaric  ['ba']           = {'ru'},            -- Bashkir  ['be-tarask']    = {'ru'},            -- Belorussian  ['ce']           = {'ru'},            -- Chechen  ['crh-cyrl']     = {'ru'},            -- Crimean Tatar (Cyrillic script)  ['cv']           = {'ru'},            -- Chuvash  ['inh']          = {'ru'},            -- Ingush  ['koi']          = {'ru'},            -- Komi-Permyak  ['krc']          = {'ru'},            -- Karachay-Balkar  ['kv']           = {'ru'},            -- Komi  ['lbe']          = {'ru'},            -- лакку  ['lez']          = {'ru'},            -- Lezghian  ['mhr']          = {'ru'},            -- Eastern Mari  ['mrj']          = {'ru'},            -- Hill Mari  ['myv']          = {'ru'},            -- Erzya  ['os']           = {'ru'},            -- Ossetic  ['sah']          = {'ru'},            -- Sakha  ['tt']           = {'tt-cyrl', 'ru'}, -- Tatar  ['tt-cyrl']      = {'ru'},            -- Tatar (Cyrillic script)  ['udm']          = {'ru'},            -- Udmurt  ['xal']          = {'ru'},            -- Kalmyk    -- ruq (Megleno Romanian) cluster: ruq-cyrl , ruq-grek , ruq-latn -> ruq (Megleno Romanian)  ['ruq']        = {'ruq-latn'},   -- Megleno-Romanian  ['ruq-cyrl']   = {'ruq', 'mk'},   ['ruq-grek']   = {'ruq'},   ['rug-latn']   = {'ro', 'ruq'},  -- Megleno-Romanian (Latin script)    -- sr (Serbian) cluster: sr-ec , sr-el -> sr (Serbian)  ['sr']         = {'sr-ec'},  ['sr-ec']      = {'sr'},   ['sr-el']      = {'sr'},      -- tg (Tajik) cluster: tg-cyrl , tg-latn -> tg (Tajik)  ['tg']         = {'tg-cyrl'},  ['tg-cyrl']    = {'tg'},   ['tg-latn']    = {'tg'},     -- tr (Turkish) cluster  ['gag']        = {'tr'}, -- Gagauz  ['kiu']        = {'tr'}, -- Kirmanjki  ['lzz']        = {'tr'}, -- Lazuri    -- tt (Tatar) cluster: tt-cyrl , tt-latn -> tt (Tatar)  ['tt-cyrl']    = {'tt'},   ['tt-latn']    = {'tt'},    -- zh (Chinese) cluster  ['gan']          = {'gan-hant', 'zh-hant'},  -- Gan   ['gan-hans']     = {'zh-hans'},              -- Simplified Gan script  ['gan-hant']     = {'zh-hant'},              -- Traditional Gan script  ['ii']           = {'zh-cn'},                -- Sichuan Yi  ['wuu']          = {'zh-hans'},              -- Wu  ['za']           = {'zh-hans'},              -- Zhuang  ['zh-hans']      = {'zh-cn', 'zh'},          -- Simplified Chinese  ['zh-hant']      = {'zh'},                   -- Traditional Chinese  ['zh']           = {'zh-hans'},            ['zh-cn']        = {'zh-hans'},              -- Chinese (China)  ['zh-hk']        = {'zh-hant'},              -- Chinese (Hong Kong)  ['zh-mo']        = {'zh-hk', 'zh-hant'},     -- 中文（澳門）  ['zh-my']        = {'zh-sg', 'zh-hans'},     -- 中文（马来西亚）‎  ['zh-sg']        = {'zh-hans'},              -- Chinese (Singapore)  ['zh-tw']        = {'zh-hant'},              -- Chinese (Taiwan)  ['zh-classical'] = {'lzh'},                  -- Literary Chinese  ['zh-min-nan']   = {'nan'},                  -- Chinese (Min Nan) -> Min Nan Chinese  ['zh-yue']       = {'yue'},                  -- ? Cantonese -> Cantonese    ------------------------  --------- misc ---------  ------------------------  ['arz']        = {'ar'},            -- Egyptian Arabic -> Arabic  ['azb']        = {'az'},            -- Southern Azerbaijani -> Azerbaijani   ['be-x-old']   = {'be-tarask'},     -- be-x-old -> be-tarask (wrong to correct Taraškievica form of Belarusian orthography)  ['bh']         = {'bho'},           -- Bihari -> Bhojpuri  ['bpy']        = {'bn'},            -- Bishnupria Manipuri -> Bengali    -- da  ['jut']        = {'da'},            -- Jutish -> Danish  ['kl']         = {'da'},            -- Kalaallisut -> Danish    ['en-gb']      = {'en'},   ['yi']         = {'he'},            -- Yiddish -> Hebrew  ['iu']         = {'ike-cans'},      -- Inuktitut -> Eastern Canadian (Aboriginal syllabics)  ['xmf']        = {'ka'},            -- Mingrelian -> Georgian  ['kbd']        = {'kbd-cyrl'},      -- Kabardian -> Адыгэбзэ  ['tcy']        = {'kn'},            -- Tulu -> Kannada  ['ko-kp']      = {'ko'},            -- 한국어 (조선) -> Korean  ['ks']         = {'ks-arab'},       -- Kashmiri -> Kashmiri (Arabic script)    -- lt  ['bat-smg']    = {'sgs', 'lt'},     -- Samogitian -> Lithuanian  ['sgs']    =     {'lt'},            -- Samogitian -> Lithuanian   ['ltg']        = {'lv'},            -- Latvian -> Latgalian  ['dtp']        = {'ms'},            -- Central Dusun -> Malay  ['no']         = {'nb'},            -- Norwegian (bokmål) -> Norwegian Bokmål  ['roa-rup']    = {'rup'},           -- ? Aromanian -> Aromanian  ['aln']        = {'sq'},            -- Gheg Albanian -> Albanian  ['ug']         = {'ug-arab'},       -- Uyghur -> Uyghur (Arabic script)  ['khw']        = {'ur'},            -- Khowar -> Urdu  ['rue']        = {'uk'},            -- Rusyn -> Ukrainian }