a-a a-c aaa aac aaj aak aao aar aas ac- aca acc acj ack aco acr acs aja ajc ajj ajk ajo ajr ajs aka akc akj akk ako akr aks aoa aoc aoj aok aoo aor aos ar- ara arc arj ark aro arr ars as- asa asc asj ask aso asr ass c-- c-j caa cac caj cak cao car cas cca ccc ccj cck cco ccr ccs cja cjc cjk cjr cjs cka ckc cko cks co- coa coc coj cok coo cor cos cra crc crj crk cro crr crs csa csc csj csk cso csr css jaa jac jaj jak jao jar jas jca jcc jck jco jcr jcs jja jjc jjj jjk jjr jjs jka jkk jko jkr jks joa joc joj jok joo jor jos jra jrc jrk jro jrr jrs jsa jsc jsj jsk jso jsr jss ka- kaa kac kaj kak kao kar kas kca kcc kck kcr kcs kjc kjr kjs kkc kkk kkr kks koa koc kok koo kor kos kra krc krk kro krr krs ksa ksc ksk kso ksr kss oaa oac oaj oak oao oar oas oc- oca occ ocj ock oco ocr ocs oja ojc ojo ojs oka okc okj okk oko okr oks oo- ooa ooc ook ooo oor oos or- ora orc ork oro orr ors os- osa osc osj osk oso osr oss ra- raa rac raj rak rao rar ras rca rcc rcj rco rcr rcs rja rjc rjk rjr rkc rkk rko rks roa roc roj rok roo ror ros rra rrc rrk rrr rrs rsa rsc rsj rsk rso rsr rss saa sac saj sak sao sar sas sca scc scj sck sco scr scs sja sjc sjj sjk sjr sjs sk- ska skc skj skk sko skr sks soa soc soj sok soo sor sos sr- sra src srj srk sro srr srs ss- ssa ssc ssj ssk sso ssr sss