-ana aaaa aaab aaad aaan aaar aaba aabb aabd aabt aada aadt aana aand aara aard aart aata aatt abaa abab abad aban abar abat abb- abba abbb abbr abbt abda abra abta adaa adab adad adan adar adat adba adda addd addn addr adna adra adta ana- anaa anab anad anan anar anat anba anbb and- anda andr andt anna annb annt ant- anta antr antt arab arad aran arar arat arba arda arna arnd arnt arr- arra arrr arrt arta artr at-t ataa atab atad atan atar atat atdt atna atra atrn atta attn attr baaa baad baan baar baat baba babb babr bada badb badd badr bana band bann banr bant bar- bara barb bard barn barr bart bata batn batt bbad bbbb bbdd bd-r bdna bnrr bnta brab brad bran brat brda brdt brna brrr btaa btan btdt btrt bttb d-na daab daad daan daar daba dabb dabt dada dana dand dann danr dant dara darb dard darn darr dart data datr datt dbar dbrn dbtt dddd dnaa dnab dnad dnan dnat dntt draa drab drad drar drat drba drda drna drra dtaa dtna dtnb naaa naab naad naan naar naat naba nada nadr nan- nana nanb nand nann nant nara nard narn narr nart nata natt nbaa nbad nbar ndaa nddb ndna ndnt nndb nnnn nntn nrab nrna nrrd nrta ntnd nttr raab raad raan raat raba rabb rada radd radr radt rana rand rann rant rara rarb rata ratt rbbb rbbr rdna rnbr rnnt rntd rrad rrat rrna rrrr rtan rtdt rtnd taa- taan taar taat taba tabb tada tana tand tann tant tara tarb tard tarn tarr tart tata tatb tatr tatt tbar tbrb tbta tddb tdna tdra tndd traa trab trad tran trat trna trra trtr ttab ttbb tttt