Chad

Ntoza, Chari-Baguirmi → Nya I, Logone Occidental → Nya II, Logone Occidental → Nya Pendé, Logone Oriental → Nyanyouléta, Ouadai → Nzili, Sila → Nzoro, Logone Oriental → Oban, Chari-Baguirmi → Obé, Wadi Fira → Obolo, Mandoul → Obolo, Tandjile → Obolone Mabirou, Chari-Baguirmi → Oboro, Batha → Obou, Tandjile → Odiou, Chari-Baguirmi → Odok, Guera → Odona Nargasila, Ouadai → Odona Niangal, Ouadai → Odoumia, Logone Oriental → Odouxi, Tibesti →