a-ak a-do a-ok aaaa aaab aaad aaba aabb aabd aada aadu aaka aaku aaoo abaa abab abad abak abau abb- abba abbb abbo abda abdo abdu aboa abob abod abok aboo abou abua abud abuk adaa adab adad adak adao adba adda addd addo addu adob adod adok adoo adua adub aduk akaa akao akka akko akku akok akua aoba auaa audo baaa baad baak baba babb babo babu bada badb badd bado badu bak- baka bako baku bau- baud bauk bbad bbau bbbb bbdd bbdo boab boad boak boba bobb bobo bobu boda bodb bodo bodu boka boko boku boob bood book boua boud bouk buad buba bubb bubo bubu buda budb budd budo budu buka bukk buko buku d-bo daab daad daau daba dabb dabo dabu dada dado dadu daka dako daku daou daub daud dauk dddd ddub dkba doab doak doba dobb dobu dod- doda dodd dodo doka doko doob dood dook doub doud douk duaa duab duad dub- duba dubb dubu duda dudd dudo dudu duka duku duo- kaaa kaab kaak kaba kabb kabd kabo kabu kad- kada kadd kado kadu kaka kakk kako kaku kaoa kaok kau- kaub kaud kauk kauo kbaa kbab kbad kbak kbba kbbb kbbd kbbk kbbo kbbu kbdb kbdo kbkb kbkk kbko kboa kbob kbod kbok kboo kbua kbub kbud kbuk kbuu kdaa kdab kdad kdak kdao kdbb kddb kddd kddk kdka kdkb kdkd kdkk kdko kdok kdub kkaa kkba kkbb kkbd kkbo kkda kkdd kkdo kkkk kkoa kkob kkoo kkua kkuu koab koak koba kobb kobk kobo kobu koda kodk kodo kodu koka kokb kokk koko koku koob kook kooo koou koua koub kouu kuau kuba kubb kubd kubo kubu kuda kudd kudo kudu kuka kukk kuku kuoa kuok kuoo kuub kuuk kuuu oaau obad obak obba obbo obkb obok odbo odda oddd odoo odou okak okka okko okok ooaa ooak ooba ooda ooku oooo ouad ouu- uaua ubba ubbo ubod ubud udaa udad udau udoo uduk ukba ukko ukok uuuu