a-a a-b a-c aaa aab aac aaf aak aao aar aas aay ab- aba abb abc abf abk abo abr abs aby ac- aca acb acc acf ack aco acr acs acy af- afa afb afc aff afk afo afr afs afy aka akb akc akk ako akr aks aoa aob aoc aof aok aoo aor aos ar- ara arb arc arf ark aro arr ars ary as- asa asb asc asf ask aso asr ass asy ay- aya ayc ayf ayk ayo ayr ays baa bab bac baf bak bao bar bas bay bba bbb bbc bbf bbk bbo bbr bbs bby bca bcb bcc bcf bck bco bcr bcs bcy bfa bfb bfc bff bfo bfr bfs bfy bka bkb bkc bkf bkk bko bkr bks boa bob boc bof bok boo bor bos boy bra brb brf brk bro brr brs bry bsa bsb bsc bsf bsk bso bsr bss bsy by- bya byc byf byk byo byr bys c-- caa cab cac caf cak cao car cas cay cba cbb cbc cbf cbk cbo cbr cbs cby cca ccb ccc ccf cck cco ccr ccs cfa cfb cfc cff cfk cfo cfr cfs cka ckb ckc cko cks cky co- coa cob coc cof cok coo cor cos coy cra crb crc crf crk cro crr crs cry csa csb csc csf csk cso csr css csy cya cyb cyc cyf cyk cyo cyr cys faa fab fac faf fak fao far fas fay fba fbb fbc fbf fbk fbo fbr fbs fca fcb fcc fcf fck fco fcr fcs fcy ffa ffc fff ffk ffo ffr ffs ffy fka fkb fkc fkf fkk foa fob foc fof fok foo for fos foy fra frb frc frf frk fro frr frs fry fsa fsb fsc fsf fsk fso fsr fss fy- fya fyb fyc fyk fyo ka- kaa kab kac kaf kak kao kar kas kay kba kbb kbc kbf kbk kbo kbr kbs kca kcb kcc kck kcr kcs kfa kfc kff kfo kfs kkb kkc kkk kkr kks kky koa kob koc kof kok koo kor kos koy kra krc krf krk kro krr krs kry ksa ksb ksc ksf ksk kso ksr kss kya kyc kyo kyr kys oaa oab oac oaf oak oao oar oas ob- oba obb obc obf obk obo obr obs oby oc- oca ocb occ ocf ock oco ocr ocs of- ofa ofb ofc off ofo ofr ofs oka okb okc okk oko okr oks oo- ooa oob ooc oof ook ooo oor oos or- ora orb orc orf ork oro orr ors ory os- osa osb osc osf osk oso osr oss oya oyo oys ra- raa rab rac raf rak rao rar ras ray rba rbb rbc rbf rbk rbo rbr rbs rca rcb rcc rcf rco rcr rcs rfa rfb rfc rff rfk rfo rfr rfs rkb rkc rkf rkk rko rks rky roa rob roc rof rok roo ror ros roy rra rrb rrc rrf rrk rrr rrs rsa rsb rsc rsf rsk rso rsr rss ry- rya ryc ryf ryk ryo ryr rys ryy saa sab sac saf sak sao sar sas say sba sbb sbc sbf sbk sbo sbr sbs sby sca scb scc scf sck sco scr scs sfa sfb sfc sff sfk sfo sfr sfs sk- ska skb skc skf skk sko skr sks sky soa sob soc sof sok soo sor sos soy sr- sra srb src srf srk sro srr srs sry ss- ssa ssb ssc ssf ssk sso ssr sss sy- sya syb syc syk syr sys yaa yab yac yaf yak yao yar yas yay ybc ybf ybr ybs yby yca ycc ycf yco ycs ycy yfa yfc yff yfr yfs yka ykk yob yoc yof yok yoo yor yos yoy yra yrc yrf yro yrs ysa ysb ysc ysk yso ysr yss ysy yyb yyc yyf yys yyy

a-ak a-ok a-ya a-yo aaaa aaab aaac aaaf aaar aaas aaba aabb aabc aaby aaca aacb aacc aacf aack aaco aacr aacs aacy aafa aafb aafc aaff aaka aaoo aara aarc aaro aars aasa aasc aasf aass abaa abab abac abaf abak abar abas abay abb- abba abbb abbo abbr abbs abby abca abcb abcc abcf abcr abcs abff aboa abob abof abok aboo abor abos aboy abra abrc abro abrs abry abs- absa absf abss abyc abys abyy acaa acab acac acar acas acba acca accc accf acco accs accy acfc acfs acks acoa acor acos acoy acr- acra acrc acro acrr acrs acry acsa acsc acss afaa afak afao afar afbs afca afcb afcc afcs affa affc affo affs affy afka afkr afoa afoo afor afr- afra afrc afro afrs afsa afsb afsc akaa akao akar akas akay akca akka akko akok akos akr- akra aksa akyr aoba aoca aocs aoks aora aorb aors aoss arab arac araf arak arar aras aray arba arbs arby arc- arca arco arcs arfa arfb arfc arff arfs arka arko arks arky aroa arob aroo aror aros arr- arra arrc arrk arro arrr arrs arry ars- arsa arsc arsk arso arsy ary- arya aryk arys asaa asab asac asaf asak asao asar asas asay asba asbo asby asc- asca ascb ascc asco ascr asfa aska asko askr asks asky asob asoc asof asok asor asos asra asrc asro asrs assa assc assk asso assr asss assy asya ay-o ayao ayar ayas ayay ayca ayoo ayos ayra ayrk ayry ayya baaa baaf baak baar baas baba babb babo babr babs baby bac- baca bacc back baco bacs bafc baff bafo bak- baka bako bakr baks baos bar- bara barb barc barf bark baro barr bars bary basa basc basf bask baso bass baya bayo bays bbas bbay bbbb bbbs bbfc bboy bbrc bbyo bcaa bcar bcas bcbc bcbs bcca bccc bccs bcfc bcof bcor bcos bcra bcrs bcsa bcsc bcss bfas bfca bfcs bffs bfsr bkcy bkry boab boac boak boar boas boba bobb bobo bobs boby boca bock boco