Chad

Ouroundou, Ouadai → Ouroungou, Tandjile → Ourouni, Tandjile → Ourpou, Tandjile → Oursé, Chari-Baguirmi → Ouseng Teïna, Tandjile → Ouskay, Kanem → Ousmanari, Chari-Baguirmi → Ouso, Kanem → Oustani, Sila → Outach, Batha → Outchéro, Salamat → Outia, Mayo-Kebbi Ouest → Outou, Logone Occidental → Outouck, Barh el Gazel → Outougou, Guera → Outoukalia, Kanem → Outoukoulou, Kanem → Ouyoungaye, Barh el Gazel → Ouziné, Sila →