a-ya a-yo aaaa aaab aaba aabb aaby aaoo abaa abab abau abax abay abb- abba abbb abbo abby aboa abob aboo abou abox aboy abua abuy abyy aoba auaa auby auoy auxa auxy auyo axo- axoa axxo ay-o ayao ayay ayoo ayou ayub ayya ba-x baaa baba babb babo babu baby bau- baux baya bayo bayu bbau bbay bbbb bbox bboy bbyo boab boba bobb bobo bobu boby boob boox boua bouy boxa boxy boya boyo buba bubb bubo bubu buoy buxa buxy buyo buyu byoa byob oaau obay obba obbo obby obox oboy ooaa ooba ooby oooo ouu- ouya oxa- oxo- oxox oxxo oxy- oyou uaua ubay ubba ubbo ubyx uuuu xbox xoxo xoyo xuxa xuxu xxxo xxxx xxxy yaba yabo yaou yaxa yaya yayo yayu yoax yoba yobo youa youb youx yoyo yuba yubu yuxa yuxu yuya yuyu yyyy