Biyanda-Buli language
Biyanda and Buli constitute a Gbaya language of the Central African Republic. Ethnologue groups them as Southwest Gbaya, but it is not clear how many of the Southwest varieties are part of the same language; Toongo and Mbodomo, for example, are not closely related, though Toongo speakers identify ethnically as Buli, and Ethnologue also lists Mbodomo as a separate language.
Phonology
| Front | Central | Back | |
| High | |||
| Mid-high | |||
| Mid-low | |||
| Low |
There are also four tones; high, low, falling, and rising.