Phonemes Usher (2020) reconstructs the consonant inventory as follows: : :
Pronouns Usher (2020) reconstructs the pronouns as: : The third-person pronouns are an innovation shared with the neighboring branch of Trans–New Guinea,
Anim. The Awyu–Ok second-person pronouns show the same vowel ablaut for gender as well.
Basic vocabulary Some lexical reconstructions of Proto-Digul River-Ok, Proto-Digul River, and Proto-Ok by Usher (2020) are: : ==References==