-er -ic c-- ccc cce cci cck ccm ccp ccr ccs ce- cec cee cei cek cem cep cer ces ci- cic cie cii cik cim cip cir cis ckc cki ckm cks cmc cme cmi cmk cmm cmp cmr cms cpc cpe cpi cpk cpm cpp cpr cps crc cre cri crk crm crp crr crs csc cse csi csk csm csp csr css ec- ecc ece eci eck ecm ecr ecs eec eee eek eem eep eer ees eic eie eii eik eim eip eir eis ekc eke eki ekp ekr eks em- emc eme emi emk emm emp emr ems ep- epc epe epi epm epp epr eps erc ere eri erk erm erp err ers es- esc ese esi esk esm esp esr ess icc ice ici ick icm icp icr ics ie- iec iee iei iek iem iep ier ies iic iie iii iim iip iir iis ikc ike iki ikk ikr iks im- imc ime imi imm imp ims ipc ipe ipi ipm ipp ipr ips ir- irc ire iri irk irm irp irr irs is- isc ise isi isk ism isp isr iss kcc kce kci kck kcm kcp kcr kcs ke- kec kee kei kek kem kep ker kes kic kie kii kik kim kip kir kis kkc kke kki kkk kkm kkp kkr kks kmc kme kmi kmk kmm kmp kms kpc kpe kpi kpk kpm kpp kpr kps krc kri krk krp krr krs ksc kse ksi ksk ksm ksp ksr kss m-r mc- mcc mce mci mck mcm mcp mcr mcs mec mee mei mek mem mep mer mes mi- mic mie mii mik mim mip mir mis mkc mke mkk mkm mkp mkr mks mmc mme mmi mmk mmm mmp mmr mms mpc mpe mpi mpk mpm mpp mpr mps mrc mre mri mrk mrm mrp mrr mrs msc mse msi msk msm msp msr mss p-p pcc pce pci pck pcm pcp pcr pcs pec pee pei pek pem pep per pes pic pie pii pik pim pip pir pis pkc pke pki pkm pkp pkr pks pmc pme pmi pmk pmm pmp pmr pms ppc ppe ppi ppk ppm ppp ppr pps prc pre pri prk prm prp prr prs ps- psc pse psi psk psm psp psr pss rcc rce rci rcm rcp rcr rcs re- rec ree rei rek rem rep rer res ric rie rii rik rim rip rir ris rkc rke rkk rkm rkp rks rmc rme rmi rmm rmp rmr rms rpc rpe rpi rpk rpm rpp rpr rps rrc rri rrk rrm rrp rrr rrs rsc rse rsi rsk rsm rsp rsr rss scc sce sci sck scm scp scr scs se- sec see sei sek sem sep ser ses sic sie sii sik sim sip sir sis sk- skc ske ski skk skm skp skr sks smc sme smi smk smm smp smr sms spc spe spi spk spm spp spr sps sr- src sre sri srk srm srp srr srs ss- ssc sse ssi ssk ssm ssp ssr sss