Комментарии:Martin 226, АПиПЯЯ 12, 13, 39-40, 67, 92, 274, Лексика 286. The irregular tone correspondence between Turk. and Kor.-Jpn. here should be probably explained by a secondary contraction *-ej- > *-ẹ̄- in PT. The medial *-j- is also responsible for the loss of *-ń- in Kor. and for the emergence of *j- in Mong. (*ja-su < *jan-su < *p`ejńe-sV). Kor. has here the *s-prefix (cf. also *s-kòrí 'tail',*s-pɨ́r 'horn').
