Warrap State, Tonj South county, Aguka village; also Tonj and Wau towns.
Bungo, Busere Bongo, Tonj Bongo. Slight dialect differences between River Busere variety, with Zande influence, and that around Tonj. Bungo dialect has minor differences.
Different from Bongo, a dialect of Mid-Southern Banda [bjo] of Central African Republic.