-er -up eee eem eeo eep eer ees eet em- eme emm emo emp emr ems emt emu eo- eoe eom eoo eop eor eos eot eou ep- epe epm epo epp epr eps ept epu ere erm ero erp err ers ert eru es- ese esm eso esp esr ess est esu ete etm eto etp etr ets ett etu eu- eue eup eur eus eut m-o m-r mee mem meo mep mer mes met meu mme mmm mmo mmp mmr mms mmt mmu moe mom moo mop mor mos mot mou mpe mpm mpo mpp mpr mps mpt mpu mre mrm mro mrp mrr mrs mrt mru mse msm mso msp msr mss mst msu mte mtm mto mtp mtr mts mtt mtu mue mum mup mur mus mut muu oee oem oeo oep oer oes oet om- ome omm omo omp omr oms omt omu oo- oom ooo oop oor oos oot op- ope opm opo opp opr ops opt or- ore orm oro orp orr ors ort oru os- ose osm oso osp osr oss ost osu ot- ote otm oto otp otr ots ott otu ou- oue oum ouo oup our ous out p-p pee pem peo pep per pes pet peu pme pmm pmo pmp pmr pms pmt pmu poe pom poo pop por pos pot pou ppe ppm ppo ppp ppr pps ppt ppu pre prm pro prp prr prs prt pru ps- pse psm pso psp psr pss pst psu pt- pte ptm pto ptp ptr pts ptt ptu pue pum pup pur pus put puu re- ree rem reo rep rer res ret reu rme rmm rmo rmp rmr rms rmt roe rom roo rop ror ros rot rou rpe rpm rpo rpp rpr rps rpt rpu rrm rrp rrr rrs rrt rru rse rsm rso rsp rsr rss rst rsu rte rtm rto rtp rtr rts rtt rtu rue rum ruo rup rur rus rut ruu se- see sem seo sep ser ses set seu sme smm smo smp smr sms smt smu soe som soo sop sor sos sot sou spe spm spo spp spr sps spt spu sr- sre srm sro srp srr srs srt ss- sse ssm sso ssp ssr sss sst ssu ste stm sto stp str sts stt stu sue sum suo sup sur sus sut suu te- tee tem teo tep ter tes tet teu tme tmm tmo tmp tmr tms tmt tmu to- toe tom too top tor tos tot tou tpe tpm tpo tpp tpr tps tpt tpu tre trm tro trp trr trs trt tru tse tsm tso tsp tsr tss tst tsu tte ttm tto ttp ttr tts ttt ttu tue tum tuo tup tur tus tut tuu uee uem uep uer ues uet um- ume umm umo ump umr ums umt umu uoe uom uoo uop uor uos uot up- upe upm upo upp upr ups upt upu ur- ure urm uro urp urr urs urt uru use usm uso usp usr uss ust usu ute utm uto utp utr uts utt utu uue uum uur uus uut uuu