a-a a-b a-c aaa aab aac aak aao aas aay ab- aba abb abc abk abo abs aby ac- aca acb acc ack aco acs acy aka akb akc akk ako aks aoa aob aoc aok aoo aos as- asa asb asc ask aso ass asy ay- aya ayc ayk ayo ays baa bab bac bak bao bas bay bba bbb bbc bbk bbo bbs bby bca bcb bcc bck bco bcs bcy bka bkb bkc bkk bko bks boa bob boc bok boo bos boy bsa bsb bsc bsk bso bss bsy by- bya byc byk byo bys c-- caa cab cac cak cao cas cay cba cbb cbc cbk cbo cbs cby cca ccb ccc cck cco ccs cka ckb ckc cko cks cky co- coa cob coc cok coo cos coy csa csb csc csk cso css csy cya cyb cyc cyk cyo cys ka- kaa kab kac kak kao kas kay kba kbb kbc kbk kbo kbs kca kcb kcc kck kcs kkb kkc kkk kks kky koa kob koc kok koo kos koy ksa ksb ksc ksk kso kss kya kyc kyo kys oaa oab oac oak oao oas ob- oba obb obc obk obo obs oby oc- oca ocb occ ock oco ocs oka okb okc okk oko oks oo- ooa oob ooc ook ooo oos os- osa osb osc osk oso oss oya oyo oys saa sab sac sak sao sas say sba sbb sbc sbk sbo sbs sby sca scb scc sck sco scs sk- ska skb skc skk sko sks sky soa sob soc sok soo sos soy ss- ssa ssb ssc ssk sso sss sy- sya syb syc syk sys yaa yab yac yak yao yas yay ybc ybs yby yca ycc yco ycs ycy yka ykk yob yoc yok yoo yos yoy ysa ysb ysc ysk yso yss ysy yyb yyc yys yyy

a-ak a-ok a-ya a-yo aaaa aaab aaac aaas aaba aabb aabc aaby aaca aacb aacc aack aaco aacs aacy aaka aaoo aasa aasc aass abaa abab abac abak abas abay abb- abba abbb abbo abbs abby abca abcb abcc abcs aboa abob abok aboo abos aboy abs- absa abss abyc abys abyy acaa acab acac acas acba acca accc acco accs accy acks acoa acos acoy acsa acsc acss akaa akao akas akay akca akka akko akok akos aksa aoba aoca aocs aoks aoss asaa asab asac asak asao asas asay asba asbo asby asc- asca ascb ascc asco aska asko asks asky asob asoc asok asos assa assc assk asso asss assy asya ay-o ayao ayas ayay ayca ayoo ayos ayya baaa baak baas baba babb babo babs baby bac- baca bacc back baco bacs bak- baka bako baks baos basa basc bask baso bass baya bayo bays bbas bbay bbbb bbbs bboy bbyo bcaa bcas bcbc bcbs bcca bccc bccs bcos bcsa bcsc bcss bkcy boab boac boak boas boba bobb bobo bobs boby boca bock boco bocs boka boko boks boob booc book boos bosa bosc bosk boso boss boya boyo boys bsaa bsac bsas bscs bsos bssc byas byck byoa byob byoc byos bysb byso byss bysy c-bo caaa caab caac caas caba cabo cabs caby cac- caca cacc cack caco caka caky caos casa casb casc cask caso cass cayo cays cbac cbbc cbbs cbca cbcc cbcs cbka cbko cbsa cbsc ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccs ccob ccoc ccsa ccss ckac ckbc ckck ckco ckcs ckcy ckoa ckob ckoc ckoo ckos ckoy cksa cksb ckso coak coas coba cobb cobo cobs coby coca cock coco cok- coka coko coky coob cook coos cosa cosc coso coss cosy coya coyo coys csaa csab csac csak csao csas cscb cscc csco cscs cska csks csob csos cssa csys cya- cyaa cyba cybb cybc cybo cyc- cyca cycb cycc cycs cyoa cyy- cyyc k-os kaaa kaab kaak kaas kaay kaba kabb kabc kabo kaby kacb kacc kaco kacs kacy kaka kakc kakk kako kaks kaoa kaoc kaok kaos kas- kasa kasb kasc kask kaso kass kaya kayo kays kbaa kbab kbac kbak kbas kbay kbba kbbb kbbc kbbk kbbo kbbs kbca kbcb kbck kbco kbcs kbcy kbkb kbkk kbko kbky kboa kbob kboc kbok kboo kbos kbsa kbsb kbsk kbso kbss kbsy kbya kbyb kbyo kbys kcaa kcab kcac kcas kcba kcbc kcbk kcbs kcca kccb kccc kcck kccy kckc kckk kcko kcky kcob kcos kcsa kcsb kcsc kcss kcsy kcya kcyk kcys kcyy kkaa kkac kkay kkba kkbb kkbo kkbs kkcb kkck kkco kkcs kkcy kkkk kkoa kkob kkoo kkoy kksa kkss kkya kkyc kkys kkyy koab koac koak koas koay koba kobb kobc kobk kobo kobs koby koca kocb kock kocs koka kokb kokc kokk koko koks koky koob kooc kook kooo koos kos- kosa kosb kosc koso koss kosy koya koyo koyy ksab ksac ksak ksas ksba ksbc ksbs ksby ksca kscb ksck ksco kscs kscy kska kskb kskk ksko ksks ksky ksob ksoc ksok ksoo ksos kssa ksso ksss ksyc ksyy kyaa kyak kyay kyba kybb kybc kybo kyby kyca kycc kyck kycs kyka kykc kykk kyks kyky kyok kyoo kyos kyoy kysa kysc kysk kyya kyyk kyyo kyys kyyy oaks oaky oasc oass oasy obak obas obay obba obbo obby obkb obok obos oboy obss ocab ocac ocak ocas ocbc occa occc ocks ocos ocsa ocys okak okas okay okby okka okko okok oksa okso okyo ooaa ooak ooba ooby ooky oooo ooos oosa osak osas osay osba osby osca oscc osco osoo osos ossa ossb osso ossy oyak oyas oyss s-os sa-c saab saac saak saas saba sabb sabc sabo sabs saca sacc sack saco sacs sacy saka sakb sakk sako saks saky saos sasa sasc sask saso sass saya sayo says sbaa sbac sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scak scas scay scba sccc sccs sccy sck- scob scok scoo scsa scsc scso skab skac skss sky- skys skyy soak soas soay soba sobo sobs soca sock soco socs