Powers, who has made a special study of the tribe, recognizes the following principal tribal divisions:[74] Achom[^a][']wi. Atua[']mih. Chum[^a][']wa. Estake[']wach. Hante[']wa. Hum[^a][']whi. Ilm[^a][']wi. Pakamalli? [Footnote 74: Cont. N.A. Eth. vol. 3, p. 267.]