The Mimi language of Wadai, as documented by Nachtigal ( Lukas, Johannes and Völckers, O. 1938 ) is missing from E16/E17/E18/E19/E20/E21/E22/E23/E24/E25/E26/E27. The language has not been sighted for over a century and is therefore likely extinct. There is some evidence (body part terms) that Mimi-Nachtigal is related to the Maban group of languages ( George Starostin 2011 ).