-er -up eee eem eep eer eet eie eii eim eip eir eit eiu em- eme emi emm emp emr emt emu ep- epe epi epm epp epr ept epu ere eri erm erp err ert eru ete eti etm etp etr ett etu eu- eue eui eup eur eut ie- iee iei iem iep ier iet iie iii iim iip iir iit iiu im- ime imi imm imp imt imu ipe ipi ipm ipp ipr ipt ipu ir- ire iri irm irp irr irt iru ite iti itm itp itt itu iu- iue iui ium iup iur iut m-r mee mei mem mep mer met meu mi- mie mii mim mip mir mit miu mme mmi mmm mmp mmr mmt mmu mpe mpi mpm mpp mpr mpt mpu mre mri mrm mrp mrr mrt mru mte mti mtm mtp mtr mtt mtu mue mui mum mup mur mut muu p-p pee pei pem pep per pet peu pie pii pim pip pir pit piu pme pmi pmm pmp pmr pmt pmu ppe ppi ppm ppp ppr ppt ppu pre pri prm prp prr prt pru pt- pte pti ptm ptp ptr ptt ptu pue pui pum pup pur put puu re- ree rei rem rep rer ret reu rie rii rim rip rir rit rme rmi rmm rmp rmr rmt rpe rpi rpm rpp rpr rpt rpu rri rrm rrp rrr rrt rru rte rti rtm rtp rtr rtt rtu rue rui rum rup rur rut ruu te- tee tei tem tep ter tet teu tie tii tim tip tir tit tiu tme tmi tmm tmp tmr tmt tmu tpe tpi tpm tpp tpr tpt tpu tre tri trm trp trr trt tru tte tti ttm ttp ttr ttt ttu tue tui tum tup tur tut tuu 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 ur- ure uri urm urp urr urt uru ute uti utm utp utr utt utu uue uum uur uut uuu