-er eee eem eer ees eie eii eim eir eis em- eme emi emm emr ems ere eri erm err ers es- ese esi esm esr ess ie- iee iei iem ier ies iie iii iim iir iis im- ime imi imm ims ir- ire iri irm irr irs is- ise isi ism isr iss m-r mee mei mem mer mes mi- mie mii mim mir mis mme mmi mmm mmr mms mre mri mrm mrr mrs mse msi msm msr mss re- ree rei rem rer res rie rii rim rir ris rme rmi rmm rmr rms rri rrm rrr rrs rse rsi rsm rsr rss se- see sei sem ser ses sie sii sim sir sis sme smi smm smr sms sr- sre sri srm srr srs ss- sse ssi ssm ssr sss