-er -ic c-- ccc cce cci ccm ccp ccr ccs ce- cec cee cei cem cep cer ces ci- cic cie cii cim cip cir cis cmc cme cmi cmm cmp cmr cms cpc cpe cpi cpm cpp cpr cps crc cre cri crm crp crr crs csc cse csi csm csp csr css ec- ecc ece eci ecm ecr ecs eec eee eem eep eer ees eic eie eii eim eip eir eis em- emc eme emi emm emp emr ems ep- epc epe epi epm epp epr eps erc ere eri erm erp err ers es- esc ese esi esm esp esr ess icc ice ici icm icp icr ics ie- iec iee iei iem iep ier ies iic iie iii iim iip iir iis im- imc ime imi imm imp ims ipc ipe ipi ipm ipp ipr ips ir- irc ire iri irm irp irr irs is- isc ise isi ism isp isr iss m-r mc- mcc mce mci mcm mcp mcr mcs mec mee mei mem mep mer mes mi- mic mie mii mim mip mir mis mmc mme mmi mmm mmp mmr mms mpc mpe mpi mpm mpp mpr mps mrc mre mri mrm mrp mrr mrs msc mse msi msm msp msr mss p-p pcc pce pci pcm pcp pcr pcs pec pee pei pem pep per pes pic pie pii pim pip pir pis pmc pme pmi pmm pmp pmr pms ppc ppe ppi ppm ppp ppr pps prc pre pri prm prp prr prs ps- psc pse psi psm psp psr pss rcc rce rci rcm rcp rcr rcs re- rec ree rei rem rep rer res ric rie rii rim rip rir ris rmc rme rmi rmm rmp rmr rms rpc rpe rpi rpm rpp rpr rps rrc rri rrm rrp rrr rrs rsc rse rsi rsm rsp rsr rss scc sce sci scm scp scr scs se- sec see sei sem sep ser ses sic sie sii sim sip sir sis smc sme smi smm smp smr sms spc spe spi spm spp spr sps sr- src sre sri srm srp srr srs ss- ssc sse ssi ssm ssp ssr sss