Proto-Akyēḥūyt

Changes from Proto-Hiereti

 * 1) merger of š, ś, ṣ́ and s
 * 2) merger of ṣ and z
 * 3) merger of ṯ, ṱ and t
 * 4) merger of ḫ and ḥ
 * 5) merger of q and k
 * 6) merger of b and p
 * 7) merger of nasal labials into m
 * 8) merger of j and l
 * 9) merger of w and y
 * 10) merger of ṭ, ḏ and d
 * 11) merger of glottal stops

Changes from Proto-Hiereti

 * 1) merger of ɘ and o