-er eee eem eer ees eet em- eme emm emr ems emt ere erm err ers ert es- ese esm esr ess est ete etm etr ets ett m-r mee mem mer mes met mme mmm mmr mms mmt mre mrm mrr mrs mrt mse msm msr mss mst mte mtm mtr mts mtt re- ree rem rer res ret rme rmm rmr rms rmt rrm rrr rrs rrt rse rsm rsr rss rst rte rtm rtr rts rtt se- see sem ser ses set sme smm smr sms smt sr- sre srm srr srs srt ss- sse ssm ssr sss sst ste stm str sts stt te- tee tem ter tes tet tme tmm tmr tms tmt tre trm trr trs trt tse tsm tsr tss tst tte ttm ttr tts ttt