Ethnologue lists Mambe’, Mamna’a, Goom, Boow, Ngbang, Sagzee, Vaazin, Home, Nyok as dialects, and notes that Goom may be a separate language.
Today, the vast majority have descended from the mountains and now live in the Lobi River plains (around the junction where the Ngaoundéré-Garoua road passes) and in Poli.
The Dugun live in the plains, and the Saa in the center of a massif that is difficult to access.
Lars Lode, a missionary linguist, estimated a lexical similarity of 95% between the two varieties using a 100-word list.
They live in a large part of the Bénoué River plains, including in the departments of Mayo-Rey (Tcholliré commune, North Region) and Vina (Mbé and Ngaoundéré communes, Adamaoua Region).