a-do a-ya a-yo aaaa aaab aaad aaaf aaba aabb aabd aaby aada aafa aafb aafd aaff aaoo abaa abab abad abaf abay abb- abba abbb abbo abby abda abdo abdy abff aboa abob abod abof aboo aboy abyy adaa adab adad adao aday adba adda addd addo addy adfa adob adod adoo adya afaa afad afao afdb affa affo affy afoa afoo aoba ay-o ayad ayao ayay ayda ayod ayoo ayya baaa baad baaf baba babb babo baby bada badb badd bado bady baff bafo baya bayo bbad bbay bbbb bbdd bbdo bboy bbyo bday boab boad boba bobb bobo boby boda bodb bodo body bofa bofd boff boob bood boof boya boyd boyf boyo byoa byob byod byyd d-bo daab daad daba dabb dabo dada dado dady dafa daff dafo daya dayo dbfo dboy dday dddd dfaf dffa doab doba dobb doby dod- doda dodd dodo dody doff doob dood doof doya doyo dya- dyab dyad dyaf dydd dyf- dyo- dyoo faaa faad faba fabd fabo fada fadd fado fady fafa faff fafo faya fayd fayo fday fdoa ffff foad foaf foba foda fody fofo food foof foya oafo obad obay obba obbo obby oboy oday odbo odda oddd oddy odoo ofay off- offa offo offy ooaa ooba ooby ooda ooff oofy oooo oyda yaaf yaba yabo yada yado yafa yaff yafo yaya yayo ydad yday yoba yobo yoda yodo yoff yood yoof yoyo yyff yyyy