a-a a-b a-c a-t aaa aab aac aan aas aat ab- aba abb abc abn abs abt ac- aca acb acc acn acs act an- ana anb anc ann ans ant as- asa asb asc asn ass ast at- ata atb atc atn ats att baa bab bac ban bas bat bba bbb bbc bbn bbs bbt bca bcb bcc bcn bcs bct bna bnb bnc bnn bns bnt bsa bsb bsc bsn bss bst bta btb btc btn bts btt c-- caa cab cac can cas cat cba cbb cbc cbn cbs cbt cca ccb ccc ccn ccs cct cn- cna cnb cnc cnn cns cnt csa csb csc csn css cst cta ctb ctc ctn cts ctt naa nab nac nan nas nat nba nbb nbc nbn nbs nbt nca ncb ncc ncn ncs nct nna nnb nnc nnn nns nnt nsa nsb nsc nsn nss nst nta ntb ntc ntn nts ntt saa sab sac san sas sat sba sbb sbc sbn sbs sbt sca scb scc scn scs sct sna snb snc snn sns snt ss- ssa ssb ssc ssn sss sst sta stb stc stn sts stt taa tab tac tan tas tat tba tbb tbc tbn tbs tbt tca tcb tcc tcn tcs tct tna tnb tnc tnn tns tnt tsa tsb tsc tsn tss tst tta ttb ttc ttn tts ttt

-ana aaaa aaab aaac aaan aaas aaba aabb aabc aabt aaca aacb aacc aacn aacs aact aana aasa aasc aass aast aata aatc aatt abaa abab abac aban abas abat abb- abba abbb abbs abbt abca abcb abcc abcn abcs abct abs- absa abss abta abts ac-t acaa acab acac acan acas acat acba acca accc accs acct acsa acsc acss acst acta actc acts actt ana- anaa anab anac anan anas anat anba anbb anca ancc anct anna annb anns annt ansa ant- anta ants antt asaa asab asac asan asas asat asba asc- asca ascb ascc asct asnc assa assc assn asss asst asta astb astc asts at-t ataa atab atac atan atas atat atbs atca atcc atcs atna atns atsb atsc atst atta attn atts baaa baan baas baat baba babb babs bac- baca bacc bacn bacs bact bana banc bann bans bant basa basc bass bast bata batc batn bats batt bbas bbbb bbbs bcaa bcas bcat bcbc bcbs bcca bccc bccs bcsa bcsc bcsn bcss bctc bcts bnas bnss bnta bsaa bsac bsas bsat bscs bsns bssc bsts btaa btan btcc btcs btss bttb caaa caab caac caan caas caat caba cabs cac- caca cacc cana canc cann cans cant casa casb casc cass cast cat- cata catb catc cats catt cbac cbat cbbc cbbs cbca cbcc cbcn cbcs cbct cbna cbsa cbsc cbsn cbta cbtc ccaa ccab ccac ccas ccat ccba ccbc ccbn ccca cccb cccc cccs ccna ccnb ccnc ccns ccsa ccsn ccss ccst cctb cctc cctt cnaa cnac cnas cnbc cnna cnsa cnss cnta cntc csaa csab csac csas csat cscb cscc cscs cssa csta cstc csts ctab ctan ctba ctbs ctca ctns ctsa ctsc ctsn ctss ctta cttn ctts naaa naab naac naan naas naat naba nabc nabs naca nacc nacs nan- nana nanb nann nans nant nas- nasa nasb nasc nass nast nata natc nats natt nbaa nbas nbbc nbca nbcc nbcs ncaa ncac ncat ncba ncbc ncbs ncca nccc nccn nccs ncct ncna ncnc ncsa ncsc ncss ncst ncta nctc nnnn nnsa nnss nntn nsaa nsac nsca nscc nscs nsna nssa nssb nssc nsss nstc nsts ntbc ntcc ntsb ntsc ntss sa-c saab saac saan saas saat saba sabb sabc sabs saca sacc sacn sacs sact sana sann sans sant sasa sasc sass sast sata satb satc satn sats satt sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbsa sbst sbtc sbtn scaa scab scac scan scas scat scba sccc sccs scct scna scnt scsa scsc scsn scst sctc sctn scts snab snas snat snba snca sncc snns ssaa ssab ssac ssan ssas ssat ssbn ssca sscc sscs ssns sssa sssb sssc ssss ssta sstb sstc ssts stab stac stan stas stat stbc stbs stca stcc stcs stnn stns stss sttc taa- taan taas taat taba tabb tabc tabs taca tacc tacs tact tana tann tans tant tasa tasb tasc tass tast tata tatb tats tatt tbas tbbs tbca tbcb tbcc tbst tbta tcbs tcca tccc tcnn tctc tcts tnbc tnca tncc tnts tsaa tsat tsbc tsca tscc tsna tssa tsst tstc tsts ttab ttbb ttcn ttss tttt

-aaa- -stan aaaas aaasa aaass aaata aabaa aabba aacbc aacsa aacsb aacss aanat abaab ababa ababs abaca abacs abana abanc abann abasa abass abbac abban abbas abbat abcan abcas abccc abtaa acaca acacb acana acass acast acats accas accts actas actsa anaba anact anana anant anasa anass anata anats anban ancts annan annas annat ansac ansan ansca antas antna asaba asabc asana asasa asats asbca ascan asnan asnas assab assac assan assas assat assns assts astab astan astas astat atana atats atbat atnaa attan attas attns b-cas baata baban babas babbs babns bacab bacas bacca bacta banan banas banat banba banca bancs banna banns bansa banta bants basab basan basca basna bassa basta basts batab batac batan batas batat batna batns batsa batta batts bcbst bccat bsaba c-a-c ca-ca caaan caaba caans caban cabas cabnt cacas canan canas canna canst canta cantn cants casas casca casta casts cata- catan catss catta catts ccass ccccc cnatt cnnnn csaba cstcc naans naast naats naban nabas nabat nabba nabts nacaa nacac nacba naccc nacna nacts nanan nanas nann- nanna nanta nasaa nasan nasat nasba nasca nassa nasta nasts natan natas natta nbcsn ncaas ncats nsaba nsasa nstnt saaba saabs saana saans saasa sabac saban sabas sabat sabca sabsa sacan sacas sacc- sacca sacsa sacta sanaa sanas sanat sanba sanct sanna sanns sansa santa sants sasan sasca sasna sassa sat-b satan satat satna satta sbata scabs scana scans scant scat- scata scats scatt sccbc scsaa snabs snasa snast sncac sncan ssats sscac sssss staab staan staat stabs