a-a a-c aaa aac aak aao aap aar aas aay ac- aca acc ack aco acp acr acs acy aka akc akk ako akp akr aks aoa aoc aok aoo aop aor aos ap- apa apc apk apo app apr aps apy ar- ara arc ark aro arp arr ars ary as- asa asc ask aso asp asr ass asy ay- aya ayc ayk ayo ayp ayr ays c-- caa cac cak cao cap car cas cay cca ccc cck cco ccp ccr ccs cka ckc cko cks cky co- coa coc cok coo cop cor cos coy cpa cpc cpk cpo cpp cpr cps cra crc crk cro crp crr crs cry csa csc csk cso csp csr css csy cya cyc cyk cyo cyp cyr cys ka- kaa kac kak kao kap kar kas kay kca kcc kck kcp kcr kcs kkc kkk kkp kkr kks kky koa koc kok koo kop kor kos koy kpa kpc kpk kpo kpp kpr kps kra krc krk kro krp krr krs kry ksa ksc ksk kso ksp ksr kss kya kyc kyo kyp kyr kys oaa oac oak oao oap oar oas oc- oca occ ock oco ocp ocr ocs oka okc okk oko okp okr oks oo- ooa ooc ook ooo oop oor oos op- opa opc opk opo opp opr ops opy or- ora orc ork oro orp orr ors ory os- osa osc osk oso osp osr oss oya oyo oys p-p paa pac pak pao pap par pas pay pca pcc pck pco pcp pcr pcs pka pkc pko pkp pkr pks pky poa poc pok poo pop por pos poy ppa ppc ppk ppo ppp ppr pps pra prc prk pro prp prr prs pry ps- psa psc psk pso psp psr pss psy py- pya pyc pyk pyo pyr pys ra- raa rac rak rao rap rar ras ray rca rcc rco rcp rcr rcs rkc rkk rko rkp rks rky roa roc rok roo rop ror ros roy rpa rpc rpk rpo rpp rpr rps rra rrc rrk rrp rrr rrs rsa rsc rsk rso rsp rsr rss ry- rya ryc ryk ryo ryr rys ryy saa sac sak sao sap sar sas say sca scc sck sco scp scr scs sk- ska skc skk sko skp skr sks sky soa soc sok soo sop sor sos soy spa spc spk spo spp spr sps spy sr- sra src srk sro srp srr srs sry ss- ssa ssc ssk sso ssp ssr sss sy- sya syc syk syp syr sys yaa yac yak yao yap yar yas yay yca ycc yco ycp ycs ycy yka ykk yoc yok yoo yop yor yos yoy ypa ypo yps yra yrc yro yrp yrs ysa ysc ysk yso ysp ysr yss ysy yyc yys yyy