-er -up eee eem eep eer ees eet em- eme emm emp emr ems emt emu ep- epe epm epp epr eps ept epu ere erm erp err ers ert eru es- ese esm esp esr ess est esu ete etm etp etr ets ett etu eu- eue eup eur eus eut m-r mee mem mep mer mes met meu mme mmm mmp mmr mms mmt mmu mpe mpm mpp mpr mps mpt mpu mre mrm mrp mrr mrs mrt mru mse msm msp msr mss mst msu mte mtm mtp mtr mts mtt mtu mue mum mup mur mus mut muu p-p pee pem pep per pes pet peu pme pmm pmp pmr pms pmt pmu ppe ppm ppp ppr pps ppt ppu pre prm prp prr prs prt pru ps- pse psm psp psr pss pst psu pt- pte ptm ptp ptr pts ptt ptu pue pum pup pur pus put puu re- ree rem rep rer res ret reu rme rmm rmp rmr rms rmt rpe rpm rpp rpr rps rpt rpu rrm rrp rrr rrs rrt rru rse rsm rsp rsr rss rst rsu rte rtm rtp rtr rts rtt rtu rue rum rup rur rus rut ruu se- see sem sep ser ses set seu sme smm smp smr sms smt smu spe spm spp spr sps spt spu sr- sre srm srp srr srs srt ss- sse ssm ssp ssr sss sst ssu ste stm stp str sts stt stu sue sum sup sur sus sut suu te- tee tem tep ter tes tet teu tme tmm tmp tmr tms tmt tmu tpe tpm tpp tpr tps tpt tpu tre trm trp trr trs trt tru tse tsm tsp tsr tss tst tsu tte ttm ttp ttr tts ttt ttu tue tum tup tur tus tut tuu uee uem uep uer ues uet um- ume umm ump umr ums umt umu up- upe upm upp upr ups upt upu ur- ure urm urp urr urs urt uru use usm usp usr uss ust usu ute utm utp utr uts utt utu uue uum uur uus uut uuu