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 Orieubi Obike Obokwe Obokwe Obor Ochicha Ohekelem Okpuala Orisaeze Okwudo Owerri Obolo Okwuohia Obudi-Agwa Ogba Oguta II Okpoko Okwu-Ogbaku Onwakiko Osoji Osoji Ossu-Obodo Owosha Obeaka Obegi Obiakpu Obofia Obufie-Mmahu Oburugo Oburuoto 1 2 3 4