a-do aaaa aaab aaad aaba aabb aabd aada aadu aaoo abaa abab abad abau abb- abba abbb abbo abda abdo abdu aboa abob abod aboo abou abua abud abza abzu adaa adab adad adao adba adda addd addo addu adob adod adoo adua adub aoba auaa audo aza- azab azad azaz azo- azoo azua azud azza azzo baaa baad baaz baba babb babo babu bada badb badd bado badu bau- baud baza bazo bbad bbau bbbb bbdd bbdo boab boad boaz boba bobb bobo bobu boda bodb bodo bodu boob bood booz boua boud boza bozo buad buba bubb bubo bubu buda budb budd budo budu buuz buza buzz bzou bzzz d-bo daab daad daau daba dabb dabo dabu dada dado dadu daou daub daud dazu dazz dddd ddub doab doba dobb dobu dod- doda dodd dodo doob dood doub doud douz doza dozo duaa duab duad dub- duba dubb dubu duda dudd dudo dudu duo- dzbb dzud oaau obad obba obbo odbo odda oddd odoo odou ooaa ooba ooda oooo ouad ouu- ouza ouzo ozd uaua ubba ubbo ubod ubud udaa udad udau udoo uuuu uzda zaba zabo zabu zada zaza zazu zobo zoda zodd zoo- zoza zozo zozu zubo zubu zuoz zuzu zzzz