-er -up eee eem eep eer eet eex eie eii eim eip eir eit eiu eix em- eme emi emm emp emr emt emu emx ep- epe epi epm epp epr ept epu epx ere eri erm erp err ert eru ete eti etm etp etr ett etu etx eu- eue eui eup eur eut eux ex- exe exi exp exr ext exu exx ie- iee iei iem iep ier iet iex iie iii iim iip iir iit iiu iix im- ime imi imm imp imt imu imx ipe ipi ipm ipp ipr ipt ipu ipx ir- ire iri irm irp irr irt iru irx ite iti itm itp itt itu itx iu- iue iui ium iup iur iut ixe ixi m-r mee mei mem mep mer met meu mex mi- mie mii mim mip mir mit miu mix mme mmi mmm mmp mmr mmt mmu mmx mpe mpi mpm mpp mpr mpt mpu mpx mre mri mrm mrp mrr mrt mru mrx mte mti mtm mtp mtr mtt mtu mtx mue mui mum mup mur mut muu mux mxi mxp mxr mxu p-p pee pei pem pep per pet peu pex pie pii pim pip pir pit piu pix pme pmi pmm pmp pmr pmt pmu pmx ppe ppi ppm ppp ppr ppt ppu ppx pre pri prm prp prr prt pru prx pt- pte pti ptm ptp ptr ptt ptu ptx pue pui pum pup pur put puu pxe pxm pxr pxt re- ree rei rem rep rer ret reu rex rie rii rim rip rir rit rix rme rmi rmm rmp rmr rmt rmx rpe rpi rpm rpp rpr rpt rpu rpx rri rrm rrp rrr rrt rru rte rti rtm rtp rtr rtt rtu rtx rue rui rum rup rur rut ruu rux rxp rxr t-x te- tee tei tem tep ter tet teu tex tie tii tim tip tir tit tiu tix tme tmi tmm tmp tmr tmt tmu tmx tpe tpi tpm tpp tpr tpt tpu tpx tre tri trm trp trr trt tru trx tte tti ttm ttp ttr ttt ttu ttx tue tui tum tup tur tut tuu tux txe txi txt txu uee uei uem uep uer uet uie uii uim uip uir uit uiu um- ume umi umm ump umr umt umu up- upe upi upm upp upr upt upu upx ur- ure uri urm urp urr urt uru urx ute uti utm utp utr utt utu utx uue uum uur uut uuu uxr uxt uxu xee xem xep xer xet xeu xex xie xii xit xiu xix xmi xmm xmp xmr xmt xmu xmx xpe xpm xpp xpt xrt xrx xti xtm xtp xtr xtx xue xui xup xxi xxp xxx