-er -up eee eem eep eer ees eet eex eie eii eim eip eir eis eit eiu eix em- eme emi emm emp emr ems emt emu emx ep- epe epi epm epp epr eps ept epu epx ere eri erm erp err ers ert eru es- ese esi esm esp esr ess est esu esx ete eti etm etp etr ets ett etu etx eu- eue eui eup eur eus eut eux ex- exe exi exp exr exs ext exu exx ie- iee iei iem iep ier ies iet iex iie iii iim iip iir iis iit iiu iix im- ime imi imm imp ims imt imu imx ipe ipi ipm ipp ipr ips ipt ipu ipx ir- ire iri irm irp irr irs irt iru irx is- ise isi ism isp isr iss ist isu ite iti itm itp its itt itu itx iu- iue iui ium iup iur ius iut ixe ixi m-r mee mei mem mep mer mes met meu mex mi- mie mii mim mip mir mis mit miu mix mme mmi mmm mmp mmr mms mmt mmu mmx mpe mpi mpm mpp mpr mps mpt mpu mpx mre mri mrm mrp mrr mrs mrt mru mrx mse msi msm msp msr mss mst msu msx mte mti mtm mtp mtr mts mtt mtu mtx mue mui mum mup mur mus mut muu mux mxi mxp mxr mxs mxu p-p pee pei pem pep per pes pet peu pex pie pii pim pip pir pis pit piu pix pme pmi pmm pmp pmr pms pmt pmu pmx ppe ppi ppm ppp ppr pps ppt ppu ppx pre pri prm prp prr prs prt pru prx ps- pse psi psm psp psr pss pst psu psx pt- pte pti ptm ptp ptr pts ptt ptu ptx pue pui pum pup pur pus put puu pxe pxm pxr pxs pxt re- ree rei rem rep rer res ret reu rex rie rii rim rip rir ris rit rix rme rmi rmm rmp rmr rms rmt rmx rpe rpi rpm rpp rpr rps rpt rpu rpx rri rrm rrp rrr rrs rrt rru rse rsi rsm rsp rsr rss rst rsu rsx rte rti rtm rtp rtr rts rtt rtu rtx rue rui rum rup rur rus rut ruu rux rxp rxr rxs se- see sei sem sep ser ses set seu sex sie sii sim sip sir sis sit siu six sme smi smm smp smr sms smt smu smx spe spi spm spp spr sps spt spu spx sr- sre sri srm srp srr srs srt srx ss- sse ssi ssm ssp ssr sss sst ssu ssx ste sti stm stp str sts stt stu stx sue sui sum sup sur sus sut suu sux sxi sxm sxs sxt sxu t-x te- tee tei tem tep ter tes tet teu tex tie tii tim tip tir tis tit tiu tix tme tmi tmm tmp tmr tms tmt tmu tmx tpe tpi tpm tpp tpr tps tpt tpu tpx tre tri trm trp trr trs trt tru trx tse tsi tsm tsp tsr tss tst tsu tsx tte tti ttm ttp ttr tts ttt ttu ttx tue tui tum tup tur tus tut tuu tux txe txi txs txt txu uee uei uem uep uer ues uet uie uii uim uip uir uis uit uiu um- ume umi umm ump umr ums umt umu up- upe upi upm upp upr ups upt upu upx ur- ure uri urm urp urr urs urt uru urx use usi usm usp usr uss ust usu usx ute uti utm utp utr uts utt utu utx uue uum uur uus uut uuu uxr uxt uxu xee xem xep xer xes xet xeu xex xie xii xis xit xiu xix xmi xmm xmp xmr xms xmt xmu xmx xpe xpm xpp xps xpt xrt xrx xsi xsm xsp xss xst xti xtm xtp xtr xts xtx xue xui xup xus xxi xxp xxx