-ana aaaa aaab aaan aaar aaas aaba aabb aabt aana aara aars aart aasa aass aast aata aatt abaa abab aban abar abas abat abb- abba abbb abbr abbs abbt abra abrs abs- absa abss abta abts ana- anaa anab anan anar anas anat anba anbb anna annb anns annt ansa ant- anta antr ants antt arab aran arar aras arat arba arbs arna arns arnt arr- arra arrr arrs arrt ars- arsa arst arta artr arts asaa asab asan asar asas asat asba asra asrs assa assn assr asss asst asta astb astr asts at-t ataa atab atan atar atas atat atbs atna atns atra atrn atsb atst atta attn attr atts baaa baan baar baas baat baba babb babr babs bana bann banr bans bant bar- bara barb barn barr bars bart basa bass bast bata batn bats batt bbas bbbb bbbs bnas bnrr bnss bnta brab bran bras brat brna brns brrr brrs brsb brsr brst bsaa bsas bsat bsns bsra bsts btaa btan btrt btss bttb naaa naab naan naar naas naat naba nabs nan- nana nanb nann nans nant nara narn narr nars nart nas- nasa nasb nasr nass nast nata nats natt nbaa nbar nbas nnnn nnsa nnss nntn nrab nras nrna nrsa nrta nrts nsaa nsar nsna nsnr nsra nssa nssb nssr nsss nsts ntsb ntss nttr raab raan raas raat raba rabb rabs rana rann rans rant rara rarb rars rasa rass rast rata rats ratt rbbb rbbr rbbs rbss rbst rnas rnbr rnnt rras rrat rrna rrrr rsaa rsna rsnn rsnr rssa rsts rtan rtas rtns rtss rtts saab saan saar saas saat saba sabb sabr sabs sana sann sanr sans sant sara sarn sarr sars sart sasa sass sast sata satb satn satr sats satt sbaa sbar sbas sbbs sbsa sbst sbtn snab snar snas snat snba snns snra snrs sntr sras srna srnn srta srtr ssaa ssab ssan ssas ssat ssbn ssbr ssns ssra ssrs sssa sssb ssss ssta sstb ssts stab stan star stas stat stbs stnn stnr stns stra strn strs stss sttr taa- taan taar taas taat taba tabb tabs tana tann tans tant tara tarb tarn tarr tars tart tasa tasb tasr tass tast tata tatb tatr tats tatt tbar tbas tbbs tbrb tbst tbta tnts traa trab tran tras trat trna trra trst trtr tsaa tsar tsat tsna tssa tssr tsst tsts ttab ttbb ttss tttt