a-a a-c aaa aac aah aak aar aas ac- aca acc ach ack acr acs aha ahc ahh ahk ahr ahs aka akc akh akk akr aks ar- ara arc arh ark arr ars as- asa asc ash ask asr ass c-- caa cac cah cak car cas cca ccc cch cck ccr ccs ch- cha chc chh chk chr chs cka ckc ckh cks cra crc crh crk crr crs csa csc csh csk csr css haa hac hah hak har has hca hcc hch hck hcr hcs hha hhc hhh hhk hhr hhs hka hkh hkk hkr hks hr- hra hrc hrh hrk hrr hrs hsa hsc hsh hsk hsr hss ka- kaa kac kah kak kar kas kca kcc kch kck kcr kcs kha khh khk khr khs kkc kkh kkk kkr kks kra krc krk krr krs ksa ksc ksh ksk ksr kss ra- raa rac rah rak rar ras rca rcc rch rcr rcs rh- rha rhc rhh rhr rhs rkc rkk rks rra rrc rrh rrk rrr rrs rsa rsc rsh rsk rsr rss saa sac sah sak sar sas sca scc sch sck scr scs sh- sha shc shh shk shr shs sk- ska skc skh skk skr sks sr- sra src srh srk srr srs ss- ssa ssc ssh ssk ssr sss