a-a a-b a-c a-t aaa aab aac aak aas aat aay ab- aba abb abc abk abs abt aby ac- aca acb acc ack acs act acy aka akb akc akk aks as- asa asb asc ask ass ast asy at- ata atb atc ats att ay- aya ayc ayk ays ayt baa bab bac bak bas bat bay bba bbb bbc bbk bbs bbt bby bca bcb bcc bck bcs bct bcy bka bkb bkc bkk bks bkt bsa bsb bsc bsk bss bst bsy bta btb btc btk bts btt bty by- bya byc byk bys byt c-- caa cab cac cak cas cat cay cba cbb cbc cbk cbs cbt cby cca ccb ccc cck ccs cct cka ckb ckc cks ckt cky csa csb csc csk css cst csy cta ctb ctc ctk cts ctt cty cya cyb cyc cyk cys cyt k-t ka- kaa kab kac kak kas kat kay kba kbb kbc kbk kbs kca kcb kcc kck kcs kct kkb kkc kkk kks kkt kky ksa ksb ksc ksk kss kst kta ktb ktc ktk kts ktt kya kyc kys kyt saa sab sac sak sas sat say sba sbb sbc sbk sbs sbt sby sca scb scc sck scs sct sk- ska skb skc skk sks skt sky ss- ssa ssb ssc ssk sss sst sta stb stc stk sts stt sty sy- sya syb syc syk sys syt taa tab tac tak tas tat tay tba tbb tbc tbk tbs tbt tca tcb tcc tck tcs tct tka tkb tkc tkk tks tkt tky tsa tsb tsc tsk tss tst tsy tta ttb ttc ttk tts ttt tty tya tyc tys tyt yaa yab yac yak yas yat yay ybc ybs yby yca ycc ycs ycy yka ykk ysa ysb ysc ysk yss yst ysy yta ytc ytk yts ytt yyb yyc yys yyt yyy

a-ak a-ya aaaa aaab aaac aaas aaba aabb aabc aabt aaby aaca aacb aacc aack aacs aact aacy aaka aasa aasc aass aast aata aatc aatk aatt abaa abab abac abak abas abat abay abb- abba abbb abbs abbt abby abca abcb abcc abcs abct abs- absa abss abta abts abyc abys abyt abyy ac-t acaa acab acac acas acat acba acca accc accs acct accy acks acsa acsc acss acst acta actc acts actt akaa akas akay akca akka aksa akst asaa asab asac asak asas asat asay asba asby asc- asca ascb ascc asct aska asks askt asky assa assc assk asss asst assy asta astb astc asts asty asya at-t ataa atab atac atak atas atat atay atbs atca atcc atck atcs atka atkt atsb atsc atst atta atts atty atya atys ayas ayat ayay ayca ayta ayya baaa baak baas baat baba babb babs baby bac- baca bacc back bacs bact bak- baka baks bakt basa basc bask bass bast bata batc bats batt baty baya bays bayt bbas bbay bbbb bbbs bcaa bcas bcat bcbc bcbs bcca bccc bccs bcsa bcsc bcss bctc bcts bkcy bsaa bsac bsas bsat bscs bskt bssc bsts btaa btcc btcs btss bttb byas byck bysb byss byst bysy byts caaa caab caac caas caat caba cabs caby cac- caca cacc cack caka caky casa casb casc cask cass cast cat- cata catb catc cats catt caty cays cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbka cbsa cbsc cbta cbtc cbyt ccaa ccab ccac ccas ccat ccba ccbc ccca cccb cccc cccs ccsa ccss ccst cctb cctc cctt ckac ckat ckbc ckck ckcs ckcy cksa cksb ckst cktb ckts ckty csaa csab csac csak csas csat cscb cscc cscs cska csks cssa csta cstc csts csys ctab ctba ctbs ctca ctsa ctsc ctss ctta ctts cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cycs cyst cyt- cyta cytb cyy- cyyc kaaa kaab kaak kaas kaat kaay kaba kabb kabc kaby kacb kacc kacs kact kacy kaka kakc kakk kaks kakt kas- kasa kasb kasc kask kass kast kat- kata katb katc katk kats katt katy kaya kays kayt kbaa kbab kbac kbak kbas kbat kbay kbba kbbb kbbc kbbk kbbs kbbt kbca kbcb kbck kbcs kbct kbcy kbkb kbkk kbky kbsa kbsb kbsk kbss kbst kbsy kbta kbtb kbtc kbtk kbts kbtt kbya kbyb kbys kcaa kcab kcac kcas kcat kcba kcbc kcbk kcbs kcca kccb kccc kcck kcct kccy kckc kckk kcky kcsa kcsb kcsc kcss kcst kcsy kcta kctb kctc kcty kcya kcyk kcys kcyt kcyy kkaa kkac kkat kkay kkba kkbb kkbs kkbt kkcb kkck kkcs kkct kkcy kkkk kksa kkss kkst kktc kktk kkts kkty kkya kkyc kkys kkyy ksab ksac ksak ksas ksat ksba ksbc ksbs ksby ksca kscb ksck kscs kscy kska kskb kskk ksks ksky kssa ksss ksst ksta kstb kstc kstk ksts kstt ksty ksyc ksyy ktaa ktak ktas ktat ktba ktbb ktbc ktbt ktby ktcc ktck ktcs ktcy ktkb ktkc ktkk ktks ktkt ktsa ktsc ktst ktsy kttc kttk ktts kttt ktty kyaa kyak kyat kyay kyba kybb kybc kyby kyca kycc kyck kycs kyct kyka kykc kykk kyks kyky kysa kysc kysk kyst kytc kyts kytt kyty kyya kyyk kyys kyyt kyyy sa-c saab saac saak saas saat saba sabb sabc sabs saca sacc sack sacs sact sacy saka sakb sakk saks saky sasa sasc sask sass sast sata satb satc sats satt saya says sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbsa sbst sbtc sbtk scaa scab scac scak scas scat scay scba sccc sccs scct sccy sck- scsa scsc scst sctc scts skab skac skat skss sky- skys skyy ssaa ssab ssac ssas ssat ssby ssca sscc sscs sssa sssb sssc ssss ssta sstb sstc ssts stab stac stak stas stat stay stbc stbs stca stcc stcs stks stss sttc styk stys syck syss syst sytt syyk taa- taas taat taba tabb tabc tabs taby taca tacc tack tacs tact tacy taka takk taks takt taky tasa tasb tasc task tass tast tasy tata tatb tats tatt taty taya tayk tays