Sandaun Province: "The language area consists of the villages to the immediate east and west of the Green River Station, as well as the villages along the Sepik River and its tributaries, starting at the border with Indonesian Papua (the Indonesian province of Papua, formerly Irian Jaya) all the way down to the border with the East Sepik."

"Sandaun Province, Green River district, Sepik and Green rivers."

30 villages in Papua New Guinea: Abaru, Dieru, Iburu, Minaburu, Ogru, Simia, Baiuwai, Baio, Biake No. 1, Biake No. 2, Buna, Hifi, Iaburu, Idam No. 1, Idam No. 2, Ileis, Imnai, Isu, Kaseiru, Kobararu, Maha, Mahani, Musuasi, Sereian, Waiar, Wauru, Yaseiru, Beimap, Wagu No. 1, and Weidoru. 8? villages in Indonesia: Buriap, Yabal, and 6 more?