Mangbetu-Asoa
The Mangbetu–Asoa or Mangbetu languages of the Central Sudanic language family are a cluster of closely related languages spoken in the Democratic Republic of Congo.
The languages are Mangbetu, spoken by perhaps a million people, and the smaller Lombi and Asoa.
Blench (2000) considers Lombi to be part of the Mangbetu dialect continuum. Asoa is spoken by Pygmies.
Proto-Mangbetu has been reconstructed by Demolin (1992).[1]