-er -up ddd dde ddm ddp ddr ddu de- ded dee dem dep der deu dmd dme dmm dmp dmr dmu dpd dpe dpm dpp dpr dpu drd dre drm drp drr dru dud due dum dup dur ed- edd ede edm edp edr edu eed eee eem eep eer em- emd eme emm emp emr emu ep- epd epe epm epp epr epu erd ere erm erp err eru eu- eud eue eup eur m-r mdd mde mdm mdp mdr mdu med mee mem mep mer meu mmd mme mmm mmp mmr mmu mpd mpe mpm mpp mpr mpu mrd mre mrm mrp mrr mru mud mue mum mup mur muu p-p pdd pde pdm pdp pdr pdu ped pee pem pep per peu pmd pme pmm pmp pmr pmu ppd ppe ppm ppp ppr ppu prd pre prm prp prr pru pud pue pum pup pur puu rdd rde rdm rdp rdr rdu re- red ree rem rep rer reu rmd rme rmm rmp rmr rpd rpe rpm rpp rpr rpu rrd rrm rrp rrr rru rud rue rum rup rur ruu udd ude udm udp udr udu ued uee uem uep uer um- umd ume umm ump umr umu up- upd upe upm upp upr upu ur- urd ure urm urp urr uru uue uum uur uuu