a-a a-b a-c a-t aaa aab aac aan aas aat aau ab- aba abb abc abn abs abt abu ac- aca acb acc acn acs act acu an- ana anb anc ann ans ant anu as- asa asb asc asn ass ast asu at- ata atb atc atn ats att atu au- aua aub auc aun aus aut b-u baa bab bac ban bas bat bau bba bbb bbc bbn bbs bbt bbu bca bcb bcc bcn bcs bct bcu bna bnb bnc bnn bns bnt bnu bsa bsb bsc bsn bss bst bsu bta btb btc btn bts btt btu bua bub buc bun bus but buu c-- caa cab cac can cas cat cau cba cbb cbc cbn cbs cbt cbu cca ccb ccc ccn ccs cct ccu cn- cna cnb cnc cnn cns cnt cnu csa csb csc csn css cst csu cta ctb ctc ctn cts ctt ctu cua cub cuc cun cus cut cuu naa nab nac nan nas nat nau nba nbb nbc nbn nbs nbt nbu nca ncb ncc ncn ncs nct ncu nna nnb nnc nnn nns nnt nnu nsa nsb nsc nsn nss nst nsu nta ntb ntc ntn nts ntt ntu nua nub nuc nun nus nut nuu saa sab sac san sas sat sau sba sbb sbc sbn sbs sbt sbu sca scb scc scn scs sct scu sna snb snc snn sns snt snu ss- ssa ssb ssc ssn sss sst ssu sta stb stc stn sts stt stu sua sub suc sun sus sut suu taa tab tac tan tas tat tau tba tbb tbc tbn tbs tbt tbu tca tcb tcc tcn tcs tct tcu tna tnb tnc tnn tns tnt tsa tsb tsc tsn tss tst tsu tta ttb ttc ttn tts ttt ttu tua tub tuc tun tus tut tuu ua- uaa uab uac uan uas uat uau uba ubb ubc ubn ubs ubt ubu uca ucb ucc ucn ucs uct ucu un- una unb unc unn uns unt unu usa usb usc usn uss ust usu uta utb utc utn uts utt utu uua uuc uun uus uut uuu

-ana a-un aaaa aaab aaac aaan aaas aaba aabb aabc aabt aaca aacb aacc aacn aacs aact aacu aana aasa aasc aass aast aasu aata aatc aatt aaus abaa abab abac aban abas abat abau abb- abba abbb abbs abbt abca abcb abcc abcn abcs abct abnu abs- absa abss absu abta abts abtu abua abun abus abut ac-t acaa acab acac acan acas acat acba acca accc accs acct accu acsa acsc acss acst acta actc acts actt actu acu- acus acut ana- anaa anab anac anan anas anat anau anba anbb anbu anca ancc anct anna annb anns annt ansa ansu ant- anta ants antt antu anua anub anun anus anut asaa asab asac asan asas asat asau asba asbu asc- asca ascb ascc asct asnc assa assc assn asss asst assu asta astb astc asts asub asun asus at-t ataa atab atac atan atas atat atbs atca atcc atcs atna atns atsb atsc atst atta attn atts attu atua atub atuc atun atus auaa auca auct auna aunt ausa aust ausu aut- auts baaa baan baas baat baba babb babs babu bac- baca bacc bacn bacs bact bana banc bann bans bant banu basa basc bass bast basu bata batc batn bats batt batu bau- bbas bbau bbbb bbbs bcaa bcas bcat bcbc bcbs bcca bccc bccs bcnu bcsa bcsc bcsn bcss bctc bcts bcuc bnas bnss bnta bsaa bsac bsas bsat bscs bsns bssc bsts btaa btan btcc btcs btss bttb btus buat buba bubb bubs bubu buca bucc bucs bucu buna bunb bunn buns bunt bunu busa busc buss bust busu but- buta buts butt buus caaa caab caac caan caas caat caba cabs cabu cac- caca cacc cana canc cann cans cant casa casb casc cass cast casu cat- cata catb catc cats catt catu cauc caus caut cbac cbat cbbc cbbs cbca cbcc cbcn cbcs cbct cbcu cbna cbsa cbsc cbsn cbta cbtc cbus ccaa ccab ccac ccas ccat ccba ccbc ccbn ccca cccb cccc cccs cccu ccna ccnb ccnc ccns ccnu ccsa ccsn ccss ccst cctb cctc cctt ccuc ccus ccut cnaa cnac cnas cnbc cnna cnsa cnss cnta cntc cnut csaa csab csac csas csat cscb cscc cscs cssa csta cstc csts csua csus ctab ctan ctba ctbs ctca ctns ctsa ctsc ctsn ctss ctsu ctta cttn ctts cuan cuau cub- cuba cubb cubs cuca cucc cucn cuna cunt cusa cusb cuss cust cusu cut- cuta cutc cuts cutt naaa naab naac naan naas naat naba nabc nabs nabu naca nacc nacs nan- nana nanb nann nans nant nanu nas- nasa nasb nasc nass nast nasu nata natc nats natt natu naus naut nbaa nbas nbbc nbca nbcc nbcs ncaa ncac ncat ncba ncbc ncbs ncca nccc nccn nccs ncct nccu ncna ncnc ncsa ncsc ncss ncst ncta nctc ncua nnnn nnsa nnss nntn nsaa nsac nsca nscc nscs nsna nssa nssb nssc nsss nstc nsts nstu nsub ntbc ntcc ntnu ntsb ntsc ntss ntsu ntuc nuan nuba nubc nubs nuca nucs nucu nuna nunc nunn nuns nunt nuss nust nusu nuts nutt nutu sa-c saab saac saan saas saat saba sabb sabc sabs sabu saca sacc sacn sacs sact sacu sana sann sans sant sanu sasa sasc sass sast sata satb satc satn sats satt satu saua sauc saun saus saut sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbsa sbst sbtc sbtn sbus scaa scab scac scan scas scat scba sccc sccs scct scna scnt scsa scsc scsn scst scsu sctc sctn scts scua scub scun scut snab snas snat snba snca sncc snns snub snus ssaa ssab ssac ssan ssas ssat ssau ssbn ssca sscc sscs ssns sssa sssb sssc ssss ssta sstb sstc ssts stab stac stan stas stat stau stbc stbs stca stcc stcs stcu stnn stns stss sttc stub stuc stun stus stut suan suas suat sub- suba subb