MbumSubgroup of 15 languagesAncestorsNiger-Congo 1554Atlantic-Congo 1454Volta-Congo 1382North 254Adamawa-Ubangi 157Adamawa 87Mbum-Day 29MbumDescendants Eastern Mbum 5 Karang 4 Koh 1 Northern 6 Dama-Galke 3 Tupuri-Mambai 3 Southern 1 Unclassified 3