E16/E17/E18/E19/E20/E21/E22/E23 has two entries Leti (Cameroon) [leo] and Mengisa [mct]. Leti [leo] is the ancestral language of the Mengisa ethnic group who are switching to Eton [eto]. The Eton that most Mengisa now speak is not linguistically remarkable ( Geslin-Houdet, F. 1984 ). Thus the Mengisa entry is duplicated whether or not it refers to the ancestral or the contemporary language. (In addition, the Leti [leo] language is so close to Tuki [bag] as to perhaps count as a dialect of it ( Biloa, Edmond 2013: 37-38 ).) See also: Eton-Mengisa [eto], Mengisa [mct], Tuki [bag].