-ana a-fu a-un aaaa aaab aaaf aaan aaas aaba aabb aafa aafb aaff aana aasa aasf aass aasu aaus abaa abab abaf aban abas abau abb- abba abbb abbs abff abnu abs- absa absf abss absu abua abuf abun abus afaa afan afbs affa affs afsa afsb afua afus ana- anaa anab anan anas anau anba anbb anbu anfa anna annb anns ansa ansf ansu anua anub anuf anun anus asaa asab asaf asan asas asau asba asbu asfa assa assn asss assu asub asun asus auaa aufs auna ausa ausu baaa baaf baan baas baba babb babs babu baff bana bann bans banu basa basf bass basu bau- bauf bbas bbau bbbb bbbs bbfn bfas bffs bnas bnss bsaa bsas bsfa bsff bsfs bsns buba bubb bubs bubu buff buna bunb bunn buns bunu busa buss busu buus faaa faan faas faba fabs fabu fafa faff fana fans fanu fasa fasn fass faun fbus ffff ffsa ffss ffun fnuf fsas fssa fssf fubb fubs fubu fuff fufu funa funf funs fusa fuss fusu naaa naab naan naas naba nabf nabs nabu nafa naff nafs nan- nana nanb nann nans nanu nas- nasa nasb nasf nass nasu naus nbaa nbaf nbas nbfa nbuf nfaa nfas nfff nfsu nnnn nnsa nnss nsaa nsfs nsna nssa nssb nssf nsss nsub nuan nuba nubs nuff nuna nunn nuns nuss nusu saab saaf saan saas saba sabb sabs sabu safa safb saff safu sana sann sans sanu sasa sasf sass saua sauf saun saus sbaa sbas sbbs sbsa sbus sfas sfba sfnb sfss sfsu snab snas snba snfu snns snub snus ssaa ssab ssan ssas ssau ssbn ssns sssa sssb sssf ssss suan suas sub- suba subb subs suf- sufa suff sufs sufu sun- suna sunb sunn suns sunu sus- susa suss susu suus uafa uasa uaua ubba uffa unaa unan unas unau unna unns uns- unsa unus us-a usaa usaf usan usas usba usbs usfa usfs usna usnu ussa ussb ussf usss ussu usua usun usus uuuu