alt|alt - Southern Altai
arc|arc - Official Aramaic (700-300 BCE)
aar|aar - Afar
abk|abk - Abkhazian
ace|ace - Achinese
ach|ach - Acoli
ada|ada - Adangme
ady|ady - Adyghe
afa|afa - Afro-Asiatic languages
afh|afh - Afrihili
afr|afr - Afrikaans
ain|ain - Ainu (Japan)
aka|aka - Akan
akk|akk - Akkadian
alb|alb / sqi - Albanian
ale|ale - Aleut
alg|alg - Algonquian languages
amh|amh - Amharic
ang|ang - Old English (ca. 450-1100)
anp|anp - Angika
apa|apa - Apache languages
ara|ara - Arabic
arg|arg - Aragonese
arm|arm / hye - Armenian
arn|arn - Mapudungun
arp|arp - Arapaho
art|art - Artificial languages
arw|arw - Arawak
asm|asm - Assamese
ast|ast - Asturian
ath|ath - Athapascan languages
aus|aus - Australian languages
ava|ava - Avaric
ave|ave - Avestan
awa|awa - Awadhi
aym|aym - Aymara
aze|aze - Azerbaijani
map|map - Austronesian languages
tut|tut - Altaic languages
cai|cai - Central American Indian languages
cpe|cpe - Creoles and pidgins, English based
cpf|cpf - Creoles and pidgins, French-based 
cpp|cpp - Creoles and pidgins, Portuguese-based 
crp|crp - Creoles and pidgins 
gba|gba - Gbaya (Central African Republic)
grc|grc - Greek, Ancient
ina|ina - Interlingua (International Auxiliary Language Association)
nai|nai - North American Indian languages
sai|sai - South American Indian (Other)
sam|sam - Samaritan Aramaic