Dii languages

The Dii language is a dialect cluster in the Duru branch of Savanna languages. "Yag Dii" is the ethnonym.
"Ethnologue" lists "Mambe’, Mamna’a, Goom, Boow, Ngbang, Sagzee, Vaazin, Home, Nyok" as dialects, and notes that Goom may be a separate language. Blench (2004) lists them all, as well as "Phaane", as separate languages, no closer to each other than they are to the other Dii languages, Duupa, Dugun (Panõ).
Writing System.
Nasalisation is indicated with a cedilla : ‹a̧, ȩ, ə̧, i̧, o̧, u̧› ; The vowels ‹ɨ, ɔ, ʉ› cannot be nasalized.
The tones are indicated by accents: