-er -up eee eem eep eer eet em- eme emm emp emr emt emu ep- epe epm epp epr ept epu ere erm erp err ert eru ete etm etp etr ett etu eu- eue eup eur eut m-r mee mem mep mer met meu mme mmm mmp mmr mmt mmu mpe mpm mpp mpr mpt mpu mre mrm mrp mrr mrt mru mte mtm mtp mtr mtt mtu mue mum mup mur mut muu p-p pee pem pep per pet peu pme pmm pmp pmr pmt pmu ppe ppm ppp ppr ppt ppu pre prm prp prr prt pru pt- pte ptm ptp ptr ptt ptu pue pum pup pur put puu re- ree rem rep rer ret reu rme rmm rmp rmr rmt rpe rpm rpp rpr rpt rpu rrm rrp rrr rrt rru rte rtm rtp rtr rtt rtu rue rum rup rur rut ruu te- tee tem tep ter tet teu tme tmm tmp tmr tmt tmu tpe tpm tpp tpr tpt tpu tre trm trp trr trt tru tte ttm ttp ttr ttt ttu tue tum tup tur tut tuu uee uem uep uer uet um- ume umm ump umr umt umu up- upe upm upp upr upt upu ur- ure urm urp urr urt uru ute utm utp utr utt utu uue uum uur uut uuu