-er c-- ccc cce cch cck ccr ccs ce- cec cee ceh cek cer ces ch- chc che chh chk chr chs ckc ckh cks crc cre crh crk crr crs csc cse csh csk csr css ec- ecc ece ech eck ecr ecs eec eee eek eer ees ehc ehe ehh ehr ehs ekc eke ekh ekr eks erc ere erh erk err ers es- esc ese esh esk esr ess hcc hce hch hck hcr hcs he- hec hee heh hek her hes hhc hhe hhh hhk hhr hhs hkh hkk hkr hks hr- hrc hre hrh hrk hrr hrs hsc hse hsh hsk hsr hss kcc kce kch kck kcr kcs ke- kec kee keh kek ker kes khe khh khk khr khs kkc kke kkh kkk kkr kks krc krk krr krs ksc kse ksh ksk ksr kss rcc rce rch rcr rcs re- rec ree reh rek rer res rh- rhc rhe rhh rhr rhs rkc rke rkk rks rrc rrh rrk rrr rrs rsc rse rsh rsk rsr rss scc sce sch sck scr scs se- sec see seh sek ser ses sh- shc she shh shk shr shs sk- skc ske skh skk skr sks sr- src sre srh srk srr srs ss- ssc sse ssh ssk ssr sss