In primo piano a b c d e f g h i j k l m n o p q r s t u v w x y z Ordine alfabetico O Okoko Item Okopedi Onegbu Ojo Onu-Ibina Ozu-Item Obeoma Ariam Obohia Oboni Obu Oru Obugwu Obuohia Ogbuebule Ohuhu-Nsulu Okporo-Enyi Okwe Okwobom Oleri Oloko Otoro-Nchara Ovorji Ovu Ngwu Ovuoku Owerrinta Obiakabi Oburuke Osusu Ogo Ubi Onuaku Uturu Oriendu Otampa 1 2 3 4