-er -ic c-- ccc cce cci cck ccm ccr ccs ce- cec cee cei cek cem cer ces ci- cic cie cii cik cim cir cis ckc cki ckm cks cmc cme cmi cmk cmm cmr cms crc cre cri crk crm crr crs csc cse csi csk csm csr css ec- ecc ece eci eck ecm ecr ecs eec eee eek eem eer ees eic eie eii eik eim eir eis ekc eke eki ekr eks em- emc eme emi emk emm emr ems erc ere eri erk erm err ers es- esc ese esi esk esm esr ess icc ice ici ick icm icr ics ie- iec iee iei iek iem ier ies iic iie iii iim iir iis ikc ike iki ikk ikr iks im- imc ime imi imm ims ir- irc ire iri irk irm irr irs is- isc ise isi isk ism isr iss kcc kce kci kck kcm kcr kcs ke- kec kee kei kek kem ker kes kic kie kii kik kim kir kis kkc kke kki kkk kkm kkr kks kmc kme kmi kmk kmm kms krc kri krk krr krs ksc kse ksi ksk ksm ksr kss m-r mc- mcc mce mci mck mcm mcr mcs mec mee mei mek mem mer mes mi- mic mie mii mik mim mir mis mkc mke mkk mkm mkr mks mmc mme mmi mmk mmm mmr mms mrc mre mri mrk mrm mrr mrs msc mse msi msk msm msr mss rcc rce rci rcm rcr rcs re- rec ree rei rek rem rer res ric rie rii rik rim rir ris rkc rke rkk rkm rks rmc rme rmi rmm rmr rms rrc rri rrk rrm rrr rrs rsc rse rsi rsk rsm rsr rss scc sce sci sck scm scr scs se- sec see sei sek sem ser ses sic sie sii sik sim sir sis sk- skc ske ski skk skm skr sks smc sme smi smk smm smr sms sr- src sre sri srk srm srr srs ss- ssc sse ssi ssk ssm ssr sss