-er -ic c-- ccc cce cci cck ccm ccp ccr ce- cec cee cei cek cem cep cer ci- cic cie cii cik cim cip cir ckc cki ckm cmc cme cmi cmk cmm cmp cmr cpc cpe cpi cpk cpm cpp cpr crc cre cri crk crm crp crr ec- ecc ece eci eck ecm ecr eec eee eek eem eep eer eic eie eii eik eim eip eir ekc eke eki ekp ekr em- emc eme emi emk emm emp emr ep- epc epe epi epm epp epr erc ere eri erk erm erp err icc ice ici ick icm icp icr ie- iec iee iei iek iem iep ier iic iie iii iim iip iir ikc ike iki ikk ikr im- imc ime imi imm imp ipc ipe ipi ipm ipp ipr ir- irc ire iri irk irm irp irr kcc kce kci kck kcm kcp kcr ke- kec kee kei kek kem kep ker kic kie kii kik kim kip kir kkc kke kki kkk kkm kkp kkr kmc kme kmi kmk kmm kmp kpc kpe kpi kpk kpm kpp kpr krc kri krk krp krr m-r mc- mcc mce mci mck mcm mcp mcr mec mee mei mek mem mep mer mi- mic mie mii mik mim mip mir mkc mke mkk mkm mkp mkr mmc mme mmi mmk mmm mmp mmr mpc mpe mpi mpk mpm mpp mpr mrc mre mri mrk mrm mrp mrr p-p pcc pce pci pck pcm pcp pcr pec pee pei pek pem pep per pic pie pii pik pim pip pir pkc pke pki pkm pkp pkr pmc pme pmi pmk pmm pmp pmr ppc ppe ppi ppk ppm ppp ppr prc pre pri prk prm prp prr rcc rce rci rcm rcp rcr re- rec ree rei rek rem rep rer ric rie rii rik rim rip rir rkc rke rkk rkm rkp rmc rme rmi rmm rmp rmr rpc rpe rpi rpk rpm rpp rpr rrc rri rrk rrm rrp rrr