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 Onuzo Onwenya Onyikwa Onyikwa Onyirigbo Opamma Ovoaba Odubade Ogoye Oje Oke Oke-Oko Ola Oloko Oloro Olorunda Olose Olowo Olowonyo Olukotun Oluwo Oluwo-Idiori Omileye Onigangan Onigbaguda Ori-Okuta Orunto Osi-Mola Otegbade Owode