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Baka (Tara Baka) is a Central Sudanic language of South Sudan, with the majority living in an area centered on Maridi, South Sudan, but also a couple thousand speakers in the DRC. It has consonants with trilled release such as /dr/ and /ɡ͡bʙ/.
Parker, Kirk H. (1985). Occasional Papers in the Study of Sudanese Languages 4. Juba, Sudan: Summer Institute of Linguistics and Institute of Regional Languages and College of Education U. of Juba. pp. 63–85.