a-a a-b a-c aaa aab aac aak aap aas aay ab- aba abb abc abk abp abs aby ac- aca acb acc ack acp acs acy aka akb akc akk akp aks ap- apa apb apc apk app aps apy as- asa asb asc ask asp ass asy ay- aya ayc ayk ayp ays b-p baa bab bac bak bap bas bay bba bbb bbc bbk bbp bbs bby bca bcb bcc bck bcp bcs bcy bka bkb bkc bkk bkp bks bpa bpb bpc bpp bps bpy bsa bsb bsc bsk bsp bss bsy by- bya byc byk byp bys c-- caa cab cac cak cap cas cay cba cbb cbc cbk cbp cbs cby cca ccb ccc cck ccp ccs cka ckb ckc cks cky cpa cpb cpc cpk cpp cps csa csb csc csk csp css csy cya cyb cyc cyk cyp cys ka- kaa kab kac kak kap kas kay kba kbb kbc kbk kbp kbs kca kcb kcc kck kcp kcs kkb kkc kkk kkp kks kky kpa kpc kpk kpp kps ksa ksb ksc ksk ksp kss kya kyc kyp kys p-p paa pab pac pak pap pas pay pba pbb pbc pbk pbp pbs pby pca pcb pcc pck pcp pcs pka pkb pkc pkp pks pky ppa ppb ppc ppk ppp pps ps- psa psb psc psk psp pss psy py- pya pyb pyc pyk pys saa sab sac sak sap sas say sba sbb sbc sbk sbp sbs sby sca scb scc sck scp scs sk- ska skb skc skk skp sks sky spa spb spc spk spp sps spy ss- ssa ssb ssc ssk ssp sss sy- sya syb syc syk syp sys yaa yab yac yak yap yas yay ybc ybp ybs yby yca ycc ycp ycs ycy yka ykk ypa yps ysa ysb ysc ysk ysp yss ysy yyb yyc yys yyy

a-ak a-ya aaaa aaab aaac aaap aaas aaba aabb aabc aabp aaby aaca aacb aacc aack aacp aacs aacy aaka aapa aapc aaps aasa aasc aass abaa abab abac abak abap abas abay abb- abba abbb abbs abby abca abcb abcc abcp abcs abpa abpc abpp abps abs- absa absp abss abyc abys abyy acaa acab acac acap acas acba acca accc accp accs accy acks acpa acps acsa acsc acss akaa akap akas akay akca akka aksa apac apak apap apas apay apba apbs apca apcb apcc apcs appa appc apps appy apsa apss asaa asab asac asak asap asas asay asba asby asc- asca ascb ascc ascp aska asks asky aspa aspc asps aspy assa assc assk assp asss assy asya ayas ayay ayca ayya baaa baak baas baba babb babs baby bac- baca bacc back bacs bak- baka baks bapa bapc bapp baps basa basc bask bass baya bays bbas bbay bbbb bbbs bcaa bcap bcas bcbc bcbp bcbs bcca bccc bccs bcpp bcps bcsa bcsc bcss bkcy bksp bpay bpcp bpsa bsaa bsac bsap bsas bscp bscs bspp bssc byas byck bysb bysp byss bysy caaa caab caac caap caas caba cabs caby cac- caca cacc cack caka caky capa capb capc capp caps capy casa casb casc cask casp cass cays cbac cbbc cbbs cbca cbcc cbcp cbcs cbka cbpc cbpp cbsa cbsc ccaa ccab ccac ccap ccas ccba ccbc ccca cccb cccc cccp cccs ccpa ccpp ccps ccsa ccsp ccss ckac ckbc ckck ckcs ckcy ckpc cksa cksb cpaa cpac cpap cpas cpbc cpca cpcs cppa cpps cpsa cpsc cpsk csaa csab csac csak csas cscb cscc cscs cska csks cspa cspb cspc csps cssa csys cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cycs cypa cypc cyps cyy- cyyc kaaa kaab kaak kaap kaas kaay kaba kabb kabc kaby kacb kacc kacp kacs kacy kaka kakc kakk kaks kap- kapa kapc kapp kaps kas- kasa kasb kasc kask kasp kass kaya kays kbaa kbab kbac kbak kbap kbas kbay kbba kbbb kbbc kbbk kbbs kbca kbcb kbck kbcs kbcy kbkb kbkk kbky kbpa kbpc kbpk kbps kbpy kbsa kbsb kbsk kbss kbsy kbya kbyb kbys kcaa kcab kcac kcap kcas kcba kcbc kcbk kcbs kcca kccb kccc kcck kccy kckc kckk kcky kcpa kcpc kcps kcsa kcsb kcsc kcsp kcss kcsy kcya kcyk kcys kcyy kkaa kkac kkap kkay kkba kkbb kkbs kkcb kkck kkcs kkcy kkkk kkpc kkpk kkps kksa kksp kkss kkya kkyc kkys kkyy kpac kpak kpas kpay kpba kpbb kpbs kpcc kpcs kpkk kpky kppc kppk kppp kpsc kpsp kpyk ksab ksac ksak ksas ksba ksbc ksbp ksbs ksby ksca kscb ksck kscs kscy kska kskb kskk ksks ksky kspa kspb kspc kspk ksps kssa ksss ksyc ksyy kyaa kyak kyap kyay kyba kybb kybc kybp kyby kyca kycc kyck kycs kyka kykc kykk kyks kyky kyp- kypa kypb kypc kyps kysa kysc kysk kysp kyya kyyk kyys kyyy paak paap paas paba paca pack pacs pacy paka paks papa papb papp paps papy pasa pasc pask pasp pass pay- paya payb payp pays pbac pbcc pbpa pbpk pbsa pbsp pcaa pcap pcas pcba pcbc pcbs pcca pccc pccs pcks pcpb pcpp pcps pcsa pkcs ppac ppap ppcc ppcs pppa pppp ppps ppss psac psap psas psca pspp psps pssa pssc psy- psys pyas pyay pyck pykk pypy pysa pysk pyss sa-c saab saac saak saap saas saba sabb sabc sabs saca sacc sack sacs sacy saka sakb sakk saks saky sapa sapp saps sapy sasa sasc sask sass saya sayp says sbaa sbac sbas sbbs sbca sbcc sbcs sbsa sbsp scaa scab scac scak scap scas scay scba sccc sccp sccs sccy sck- scpa scpb scps scsa scsc skab skac skap skpc skss sky- skys skyy sp-a spac spak spap spas spay spby spca spcc spcs spps spsa spsp spss spy- spys ssaa ssab ssac ssap ssas ssby ssca sscc sscp sscs sspa sspc ssps sssa sssb sssc ssss syck syss syyk yaak yaas yaba yacc yack yacp yacy yaka yaks yapa yapp yaps yasa yask yass yaya yays ybas ybbs ycab yccc