-er eee eek eem eer ees eie eii eik eim eir eis eke eki ekr eks em- eme emi emk emm emr ems ere eri erk erm err ers es- ese esi esk esm esr ess ie- iee iei iek iem ier ies iie iii iim iir iis ike iki ikk ikr iks im- ime imi imm ims ir- ire iri irk irm irr irs is- ise isi isk ism isr iss ke- kee kei kek kem ker kes kie kii kik kim kir kis kke kki kkk kkm kkr kks kme kmi kmk kmm kms kri krk krr krs kse ksi ksk ksm ksr kss m-r mee mei mek mem mer mes mi- mie mii mik mim mir mis mke mkk mkm mkr mks mme mmi mmk mmm mmr mms mre mri mrk mrm mrr mrs mse msi msk msm msr mss re- ree rei rek rem rer res rie rii rik rim rir ris rke rkk rkm rks rme rmi rmm rmr rms rri rrk rrm rrr rrs rse rsi rsk rsm rsr rss se- see sei sek sem ser ses sie sii sik sim sir sis sk- ske ski skk skm skr sks sme smi smk smm smr sms sr- sre sri srk srm srr srs ss- sse ssi ssk ssm ssr sss