a-a a-c aaa aac aae aah aak aas ac- aca acc ace ach ack acs aea aec aee aeh aek aes aha ahc ahe ahh ahk ahs aka akc ake akh akk aks as- asa asc ase ash ask ass c-- caa cac cae cah cak cas cca ccc cce cch cck ccs ce- cea cec cee ceh cek ces ch- cha chc che chh chk chs cka ckc ckh cks csa csc cse csh csk css eaa eac eae eah eak eas ec- eca ecc ece ech eck ecs eea eec eee eek ees eha ehc ehe ehh ehs eka ekc eke ekh eks es- esa esc ese esh esk ess haa hac hae hah hak has hca hcc hce hch hck hcs he- hea hec hee heh hek hes hha hhc hhe hhh hhk hhs hka hkh hkk hks hsa hsc hse hsh hsk hss ka- kaa kac kae kah kak kas kca kcc kce kch kck kcs ke- kea kec kee keh kek kes kha khe khh khk khs kkc kke kkh kkk kks ksa ksc kse ksh ksk kss saa sac sae sah sak sas sca scc sce sch sck scs se- sea sec see seh sek ses sh- sha shc she shh shk shs sk- ska skc ske skh skk sks ss- ssa ssc sse ssh ssk sss