return {
    ["ab"]  = {"Abkhaz"},
    ["abk"] = {"Abkhaz"},
    ["ace"] = {"Acehnese"},
    ["aec"] = {"Sa'idi Arabic"},
    ["ain"] = {"Ainu"},
    ["akl"] = {"Aklan"},
    ["alt"] = {"Altay"},
    ["an"]  = {"Aragonese"},
    ["ang"] = {"Old English"},
    ["apm"] = {"Mescalero-Chiricahua"},
    ["av"]  = {"Avar"},
    ["bal"] = {"Balochi"},
    ["bar"] = {"Austro-Bavarian"},
    ["bat-smg"]  = {"Samogitian"},
    ["bcl"] = {"Central Bicolano"},
    ["be-x-old "] = {"Belarusian (Taraškievica)"},
    ["ber"] = {"Berber"},
    ["bh"]  = {"Bihari"},
    ["bin"] = {"Edo"},
    ["bo"]  = {"Standard Tibetan"},
    ["bpy"] = {"Bishnupriya Manipuri"},
    ["brx"] = {"Bodo"},
    ["cbk-zam"]  = {"Chavacano"},
    ["cel"] = {"Proto-Celtic"},
    ["cg"]  = {"Montenegrin", "sr-ME"},
    ["chg"] = {"Chagatay"},
    ["chm"] = {"Mari"},
    ["ckb"] = {"Sorani Kurdish"},
    ["cnu"] = {"Shenwa"},
    ["coc"] = {"Cocopah"},
    ["cu"]  = {"Old Church Slavonic"},
    ["de-AT"] = {"Austrian German"},
    ["deu"] = {"early German"},
    ["diq"] = {"Zazaki"},
    ["egy"] = {"Egyptian"},
    ["el"]  = {"Greek"},
    ["ell"] = {"Modern Greek"},
    ["en-AU"] = {"Australian English"},
    ["en-CA"] = {"Canadian English"},
    ["en-emodeng"] = {"Early Modern English"},
    ["en-GB"] = {"British English"},
    ["en-IE"] = {"Irish English"},
    ["en-NZ"] = {"New Zealand English"},
    ["en-SA"] = {"South African English"},
    ["en-US"] = {"American English"},
    ["enm"] = {"Middle English"},
    ["ff"]  = {"Fula"},
    ["fit"] = {"Meänkieli"},
    ["fiu-vro"]  = {"Võro"},
    ["fkv"] = {"Kven"},
    ["frk"] = {"Old Frankish"},
    ["frm"] = {"Middle French"},
    ["fro"] = {"Old French"},
    ["fry"] = {"West Frisian"},
    ["fy"]  = {"Frisian"},
    ["gem"] = {"Proto-Germanic"},
    ["gez"] = {"Ge'ez"},
    ["gju"] = {"Gujari "},
    ["gkm"] = {"Medieval Greek", "grc"},
    ["gmh"] = {"Middle High German"},
    ["goh"] = {"Old High German"},
    ["grc"] = {"Ancient Greek"},
    ["grc-gre"] = {"Greek", "grc"},
    ["gsw"] = {"Alemannic German"},
    ["gul"] = {"Gullah"},
    ["hak"] = {"Hakka"},
    ["hbo"] = {"Biblical Hebrew"},
    ["hnd"] = {"Hindko"},
    ["ht"]  = {"Haitian Creole"},
    ["hz"]  = {"Otjiherero"},
    ["ia"]  = {"Interlingua"},
    ["ii"]  = {"Yi"},
    ["ikt"] = {"Inuvialuk"},
    ["ilo"] = {"Ilokano"},
    ["kaa"] = {"Karakalpak"},
    ["khb"] = {"Tai Lü"},
    ["ki"]  = {"Gikuyu"},
    ["kk"]  = {"Kazakh"},
    ["kl"]  = {"Greenlandic"},
    ["km"]  = {"Khmer"},
    ["kmr"] = {"Kurmanji Kurdish"},
    ["knn"] = {"Konkani"},
    ["kok"] = {"Konkani"},
    ["kpo"] = {"Kposo"},
    ["krj"] = {"Kinaray-a"},
    ["ksh"] = {"Ripuarian"}, --ksh is the code of Colognian, but ksh.wiki is the Ripuarian Wikipedia
    ["ktz"] = {"Juǀ'hoan"},
    ["ky"]  = {"Kyrgyz"},
    ["lez"] = {"Lezgian"},
    ["lg"]  = {"Luganda"},
    ["li"]  = {"Limburgish"},
    ["liv"] = {"Livonian"},
    ["lng"] = {"Lombardic"},
    ["map-bms"] = {"Banyumasan"},
    ["maz"] = {"Mazovian"},
    ["mga"] = {"Middle Irish"},
    ["mhr"] = {"Mari"},
    ["mi"]  = {"Māori"},
    ["mia"] = {"Miami-Illinois"},
    ["miq"] = {"Miskito"},
    ["mix"] = {"Mixtec"},
    ["mla"] = {"Medieval Latin"},
    ["mni"] = {"Meitei"},
    ["mol"] = {"Moldovan", "ro"},
    ["mrj"] = {"Hill Mari"},
    ["ms"]  = {"Malay"},
    ["mww"] = {"White Hmong"},
    ["myn"] = {"Mayan"},
    ["mzn"] = {"Mazanderani"},
    ["na"]  = {"Nauruan"},
    ["nah"] = {"Nahuatl"},
    ["nan"] = {"Taiwanese Hokkien"},
    ["naq"] = {"Khoekhoe"},
    ["naz"] = {"North Azeri"},
    ["nb"]  = {"Bokmål"},
    ["nci"] = {"Classical Nahuatl"},
    ["nd"]  = {"Northern Ndebele"},
    ["nds-nl"]  = {"Dutch Low Saxon"},
    ["ne"]  = {"Nepali"},
    ["new"] = {"Nepal Bhasa"},
    ["nn"]  = {"Nynorsk"},
    ["nr"]  = {"Southern Ndebele"},
    ["nrm"]  = {"Norman"},
    ["nsd"] = {"Dutch Low Saxon"},
    ["nso"] = {"Northern Sotho"},
    ["nwc"] = {"Classical Nepal Bhasa"},
    ["ny"]  = {"Chichewa"},
    ["oc"]  = {"Occitan"},
    ["oci"] = {"Provençal"},
    ["oj"]  = {"Ojibwe"},
    ["ood"] = {"O'odham"},
    ["or"]  = {"Odia"},
    ["ota"] = {"Ottoman Turkish"},
    ["otk"] = {"Old Turkic"},
    ["pa"]  = {"Punjabi"},
    ["pal"] = {"Middle Persian"},
    ["pam"] = {"Kapampangan"},
    ["peo"] = {"Old Persian"},
    ["pgl"] = {"Proto-Irish"},
    ["phr"] = {"Potwari"},
    ["pi"]  = {"Pali"},
    ["pka"] = {"Jain Prakrit"},
    ["pnb"] = {"Punjabi"},
    ["pra"] = {"Prakrit"},
    ["psu"] = {"Shauraseni"},
    ["rap"] = {"Rapa Nui"},
    ["rar"] = {"Cook Islands Māori"},
    ["rmu"] = {"Scandoromani"},
    ["rn"]  = {"Kirundi"},
    ["ro"]  = {"Romanian"},
    ["roa"] = {"Jèrriais"},
    ["roa-rup"]  = {"Aromanian"},
    ["roa-tara"]  = {"Tarantino"},
    ["rom"] = {"Romani"},
    ["rup"] = {"Aromanian"},
    ["rus"] = {"Russian"},
    ["rw"]  = {"Kinyarwanda"},
    ["ryu"] = {"Okinawan"},
    ["sah"] = {"Sakha"},
    ["sal"] = {"Salish"},
    ["saz"] = {"South Azeri"},
    ["sdc"] = {"Sassarese"},
    ["sdn"] = {"Gallurese"},
    ["sga"] = {"Old Irish"},
    ["shp"] = {"Shipibo"},
    ["si"]  = {"Sinhalese"},
    ["simple"]  = {"Simple English"},
    ["skr"] = {"Saraiki"},
    ["sl"]  = {"Slovene"},
    ["sla"] = {"Slavic"},
    ["son"] = {"Songhay"},
    ["sr-Cyrl"] = {"Serbian Cyrillic"},
    ["src"] = {"Logudorese"},
    ["sro"] = {"Campidanese"},
    ["ss"]  = {"Swazi"},
    ["st"]  = {"Sotho"},
    ["sw"]  = {"Swahili"},
    ["tkl"] = {"Tokelauan"},
    ["to"]  = {"Tongan"},
    ["tvl"] = {"Tuvaluan"},
    ["tyv"] = {"Tuvan"},
    ["vls"] = {"West Flemish"},
    ["war"] = {"Waray"},
    ["wen"] = {"Sorbian"},
    ["wep"] = {"Westphalian"},
    ["xal"] = {"Oirat"},
    ["xal-RU"] = {"Kalmyk Oirat"},
    ["xcl"] = {"Old Armenian"},
    ["yua"] = {"Yucatec Maya"},
    ["za"]  = {"Zhuang"},
    ["zh-classical"]  = {"Classical Chinese"},
    ["zh-min-nan"]  = {"Min Nan"},
    ["zh-yue"]  = {"Cantonese"},
}