-er -ic c-- ccc cce cci ccm ccr ce- cec cee cei cem cer ci- cic cie cii cim cir cmc cme cmi cmm cmr crc cre cri crm crr ec- ecc ece eci ecm ecr eec eee eem eer eic eie eii eim eir em- emc eme emi emm emr erc ere eri erm err icc ice ici icm icr ie- iec iee iei iem ier iic iie iii iim iir im- imc ime imi imm ir- irc ire iri irm irr m-r mc- mcc mce mci mcm mcr mec mee mei mem mer mi- mic mie mii mim mir mmc mme mmi mmm mmr mrc mre mri mrm mrr rcc rce rci rcm rcr re- rec ree rei rem rer ric rie rii rim rir rmc rme rmi rmm rmr rrc rri rrm rrr