-er -ic c-- ccc cce cci cck ccm ccr ce- cec cee cei cek cem cer ci- cic cie cii cik cim cir ckc cki ckm cmc cme cmi cmk cmm cmr crc cre cri crk crm crr ec- ecc ece eci eck ecm ecr eec eee eek eem eer eic eie eii eik eim eir ekc eke eki ekr em- emc eme emi emk emm emr erc ere eri erk erm err icc ice ici ick icm icr ie- iec iee iei iek iem ier iic iie iii iim iir ikc ike iki ikk ikr im- imc ime imi imm ir- irc ire iri irk irm irr kcc kce kci kck kcm kcr ke- kec kee kei kek kem ker kic kie kii kik kim kir kkc kke kki kkk kkm kkr kmc kme kmi kmk kmm krc kri krk krr m-r mc- mcc mce mci mck mcm mcr mec mee mei mek mem mer mi- mic mie mii mik mim mir mkc mke mkk mkm mkr mmc mme mmi mmk mmm mmr mrc mre mri mrk mrm mrr rcc rce rci rcm rcr re- rec ree rei rek rem rer ric rie rii rik rim rir rkc rke rkk rkm rmc rme rmi rmm rmr rrc rri rrk rrm rrr