"ISO 639-1 language code"
enum LanguageCode {
    "Afar"
    aa
    "Abkhazian"
    ab
    "Afrikaans"
    af
    "Akan"
    ak
    "Albanian"
    sq
    "Amharic"
    am
    "Arabic"
    ar
    "Aragonese"
    an
    "Armenian"
    hy
    "Assamese"
    as
    "Avaric"
    av
    "Avestan"
    ae
    "Aymara"
    ay
    "Azerbaijani"
    az
    "Bashkir"
    ba
    "Bambara"
    bm
    "Basque"
    eu
    "Belarusian"
    be
    "Bengali"
    bn
    "Bihari languages"
    bh
    "Bislama"
    bi
    "Bosnian"
    bs
    "Breton"
    br
    "Bulgarian"
    bg
    "Burmese"
    my
    "Catalan; Valencian"
    ca
    "Chamorro"
    ch
    "Chechen"
    ce
    "Chinese"
    zh
    "Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic"
    cu
    "Chuvash"
    cv
    "Cornish"
    kw
    "Corsican"
    co
    "Cree"
    cr
    "Czech"
    cs
    "Danish"
    da
    "Divehi; Dhivehi; Maldivian"
    dv
    "Dutch; Flemish"
    nl
    "Dzongkha"
    dz
    "English"
    en
    "Esperanto"
    eo
    "Estonian"
    et
    "Ewe"
    ee
    "Faroese"
    fo
    "Fijian"
    fj
    "Finnish"
    fi
    "French"
    fr
    "Western Frisian"
    fy
    "Fulah"
    ff
    "Georgian"
    ka
    "German"
    de
    "Gaelic; Scottish Gaelic"
    gd
    "Irish"
    ga
    "Galician"
    gl
    "Manx"
    gv
    "Greek, Modern (1453-)"
    el
    "Guarani"
    gn
    "Gujarati"
    gu
    "Haitian; Haitian Creole"
    ht
    "Hausa"
    ha
    "Hebrew"
    he
    "Herero"
    hz
    "Hindi"
    hi
    "Hiri Motu"
    ho
    "Croatian"
    hr
    "Hungarian"
    hu
    "Igbo"
    ig
    "Icelandic"
    is
    "Ido"
    io
    "Sichuan Yi; Nuosu"
    ii
    "Inuktitut"
    iu
    "Interlingue; Occidental"
    ie
    "Interlingua (International Auxiliary Language Association)"
    ia
    "Indonesian"
    id
    "Inupiaq"
    ik
    "Italian"
    it
    "Javanese"
    jv
    "Japanese"
    ja
    "Kalaallisut; Greenlandic"
    kl
    "Kannada"
    kn
    "Kashmiri"
    ks
    "Kanuri"
    kr
    "Kazakh"
    kk
    "Central Khmer"
    km
    "Kikuyu; Gikuyu"
    ki
    "Kinyarwanda"
    rw
    "Kirghiz; Kyrgyz"
    ky
    "Komi"
    kv
    "Kongo"
    kg
    "Korean"
    ko
    "Kuanyama; Kwanyama"
    kj
    "Kurdish"
    ku
    "Lao"
    lo
    "Latin"
    la
    "Latvian"
    lv
    "Limburgan; Limburger; Limburgish"
    li
    "Lingala"
    ln
    "Lithuanian"
    lt
    "Luxembourgish; Letzeburgesch"
    lb
    "Luba-Katanga"
    lu
    "Ganda"
    lg
    "Macedonian"
    mk
    "Marshallese"
    mh
    "Malayalam"
    ml
    "Maori"
    mi
    "Marathi"
    mr
    "Malay"
    ms
    "Malagasy"
    mg
    "Maltese"
    mt
    "Mongolian"
    mn
    "Nauru"
    na
    "Navajo; Navaho"
    nv
    "Ndebele, South; South Ndebele"
    nr
    "Ndebele, North; North Ndebele"
    nd
    "Ndonga"
    ng
    "Nepali"
    ne
    "Norwegian Nynorsk; Nynorsk, Norwegian"
    nn
    "Bokmål, Norwegian; Norwegian Bokmål"
    nb
    "Norwegian"
    no
    "Chichewa; Chewa; Nyanja"
    ny
    "Occitan (post 1500); Provençal"
    oc
    "Ojibwa"
    oj
    "Oriya"
    or
    "Oromo"
    om
    "Ossetian; Ossetic"
    os
    "Panjabi; Punjabi"
    pa
    "Persian"
    fa
    "Pali"
    pi
    "Polish"
    pl
    "Portuguese"
    pt
    "Pushto; Pashto"
    ps
    "Quechua"
    qu
    "Romansh"
    rm
    "Romanian; Moldavian; Moldovan"
    ro
    "Rundi"
    rn
    "Russian"
    ru
    "Sango"
    sg
    "Sanskrit"
    sa
    "Sinhala; Sinhalese"
    si
    "Slovak"
    sk
    "Slovenian"
    sl
    "Northern Sami"
    se
    "Samoan"
    sm
    "Shona"
    sn
    "Sindhi"
    sd
    "Somali"
    so
    "Sotho, Southern"
    st
    "Spanish; Castilian"
    es
    "Sardinian"
    sc
    "Serbian"
    sr
    "Swati"
    ss
    "Sundanese"
    su
    "Swahili"
    sw
    "Swedish"
    sv
    "Tahitian"
    ty
    "Tamil"
    ta
    "Tatar"
    tt
    "Telugu"
    te
    "Tajik"
    tg
    "Tagalog"
    tl
    "Thai"
    th
    "Tibetan"
    bo
    "Tigrinya"
    ti
    "Tonga (Tonga Islands)"
    to
    "Tswana"
    tn
    "Tsonga"
    ts
    "Turkmen"
    tk
    "Turkish"
    tr
    "Twi"
    tw
    "Uighur; Uyghur"
    ug
    "Ukrainian"
    uk
    "Urdu"
    ur
    "Uzbek"
    uz
    "Venda"
    ve
    "Vietnamese"
    vi
    "Volapük"
    vo
    "Welsh"
    cy
    "Walloon"
    wa
    "Wolof"
    wo
    "Xhosa"
    xh
    "Yiddish"
    yi
    "Yoruba"
    yo
    "Zhuang; Chuang"
    za
    "Zulu"
    zu
}