-ana aaaa aaab aaad aaaf aaan aaar aaba aabb aabd aabt aada aadt aafa aafb aafd aaff aana aand aara aard aart aata aatf aatt abaa abab abad abaf aban abar abat abb- abba abbb abbr abbt abda abff abra abta adaa adab adad adan adar adat adba adda addd addn addr adfa adna adra adta afaa afad afan afar afat afdb affa afft afr- afra afta aftn ana- anaa anab anad anan anar anat anba anbb and- anda andr andt anfa anna annb annt ant- anta antr antt arab arad araf aran arar arat arba arda ardf arfa arfb arff arft arna arnd arnt arr- arra arrr arrt arta artr at-t ataa atab atad atan atar atat atdt atfb atna atra atrn atta attn attr baaa baad baaf baan baar baat baba babb babr bada badb badd badr baff baft bana band bann banr bant bar- bara barb bard barf barn barr bart bata batf batn batt bbad bbbb bbdd bbfn bd-r bdna bfta bftt bnrr bnta brab brad braf bran brat brda brdt brna brrr btaa btaf btan btdt btrt bttb d-na daab daad daan daar daba dabb dabt dada dafa daff daft dana dand dann danr dant dara darb dard darf darn darr dart data datr datt dbar dbrn dbtt dddd dfaf dfdt dffa dfrf dftr dnaa dnab dnad dnan dnat dntt draa drab drad draf drar drat drba drda drna drra dtaa dtna dtnb faaa faad faan faba fabd fada fadd fafa faff fana fand fant fara farb fard farr fart fata fatf fatt fbar ffar ffff ffrr fftf fnar fndd fndn fndr fnta fntb frab frad fran frat frta ftan naaa naab naad naan naar naat naba nabf nada nadf nadr nafa naff nan- nana nanb nand nann nant nara nard narf narn narr nart nata natt nbaa nbad nbaf nbar nbfa ndaa nddb ndfa ndna ndnt ndrf nfaa nfat nfda nfff nfra nfta nndb nnnn nntn nrab nrna nrrd nrta ntnd nttr raab raad raaf raan raat raba rabb rada radd radr radt rafa raff raft rana rand rann rant rara rarb rarf rata ratf ratt rbaf rbbb rbbr rdfa rdna rnaf rnbr rndf rnnt rntd rrad rrat rrna rrrr rtan rtbf rtdt rtfb rtnd taa- taaf taan taar taat taba tabb tada tafa taff taft tana tand tann tant tara tarb tard tarf tarn tarr tart tata tatb tatr tatt tbaf tbar tbnf tbrb tbta tddb tdff tdna tdra tndd tndf traa trab trad traf tran trat trfd trfr trna trra trtr ttab ttbb ttfa ttff ttfn tttt