The Somahai pronouns, singular *na, *ka, *mo, are typical of
Trans–New Guinea languages. They were placed in the
Central and South New Guinea branch of that family by Wurm.
Ross could not locate enough evidence to classify them. Usher found them to be closest to the
Mek languages, in the
Central West New Guinea, which partially overlaps with Wurm's C&SNG. ==Phonology==