-er -ic c-- ccc cce cch cci cck ccr ccs ce- cec cee ceh cei cek cer ces ch- chc che chh chi chk chr chs ci- cic cie cih cii cik cir cis ckc ckh cki cks crc cre crh cri crk crr crs csc cse csh csi csk csr css ec- ecc ece ech eci eck ecr ecs eec eee eek eer ees ehc ehe ehh ehi ehr ehs eic eie eii eik eir eis ekc eke ekh eki ekr eks erc ere erh eri erk err ers es- esc ese esh esi esk esr ess h-i hcc hce hch hci hck hcr hcs he- hec hee heh hei hek her hes hhc hhe hhh hhi hhk hhr hhs hic hie hih hii hik hir his hkh hki hkk hkr hks hr- hrc hre hrh hri hrk hrr hrs hsc hse hsh hsi hsk hsr hss icc ice ich ici ick icr ics ie- iec iee iei iek ier ies ihc ihe ihh ihi ihk ihr ihs iic iie iih iii iir iis ikc ike iki ikk ikr iks ir- irc ire iri irk irr irs is- isc ise ish isi isk isr iss kcc kce kch kci kck kcr kcs ke- kec kee keh kei kek ker kes khe khh khi khk khr khs kic kie kih kii kik kir kis kkc kke kkh kki kkk kkr kks krc kri krk krr krs ksc kse ksh ksi ksk ksr kss rcc rce rch rci rcr rcs re- rec ree reh rei rek rer res rh- rhc rhe rhh rhi rhr rhs ric rie rih rii rik rir ris rkc rke rkk rks rrc rrh rri rrk rrr rrs rsc rse rsh rsi rsk rsr rss scc sce sch sci sck scr scs se- sec see seh sei sek ser ses sh- shc she shh shi shk shr shs sic sie sih sii sik sir sis sk- skc ske skh ski skk skr sks sr- src sre srh sri srk srr srs ss- ssc sse ssh ssi ssk ssr sss