-ana a-un aaaa aaab aaan aaba aabb aabt aana aata aatt abaa abab aban abat abau abb- abba abbb abbt abnu abta abtu abua abun abut ana- anaa anab anan anat anau anba anbb anbu anna annb annt ant- anta antt antu anua anub anun anut at-t ataa atab atan atat atna atta attn attu atua atub atun auaa auna aunt aut- baaa baan baat baba babb babu bana bann bant banu bata batn batt batu bau- bbau bbbb bnta btaa btan bttb buat buba bubb bubu buna bunb bunn bunt bunu but- buta butt naaa naab naan naat naba nabu nan- nana nanb nann nant nanu nata natt natu naut nbaa nnnn nntn ntnu nuan nuba nuna nunn nunt nutt nutu taa- taan taat taba tabb tabu tana tann tant tanu tata tatb tatt tatu taua taub taut tbta tnut ttab ttbb tttt tuan tuat tuba tubb tubu tuna tunb tunn tunu tuta tutt tutu uata uatu uaua ubba unaa unan unat unau unna untb unut utan utau uttu uuta uuuu