a-ya a-yo aaaa aaab aaba aabb aaby aaoo abaa abab abau abay abb- abba abbb abbo abby aboa abob aboo abou aboy abua abuy abyy abza abzu aoba auaa auby auoy auyo ay-o ayao ayay ayaz ayoo ayou ayub ayya aza- azab azay azaz azo- azoo azua azza azzo baaa baaz baba babb babo babu baby bau- baya bayo bayu bayz baza bazo bazy bbau bbay bbbb bboy bbyo boab boaz boba bobb bobo bobu boby boob booz boua bouy boya boyo boyz boza bozo buba bubb bubo bubu buoy buuz buyo buyu buza buzy buzz byoa byob bzou bzyb bzzz oaau oazy obay obba obbo obby oboy ooaa ooba ooby oooo oozy ouu- ouya ouza ouzo oyou ozzy uaua ubay ubba ubbo uuuu uzay yaba yabo yaou yaya yayo yayu yaza yazz yoba yobo yooz youa youb youz yoyo yozo yuba yubu yuya yuyu yuza yuzo yuzu yyyy zaba zabo zabu zaby zaya zayu zaza zazu zobo zoo- zoya zoza zozo zozu zubo zubu zuby zuoz zuzu zzzz