-er -up ddd dde ddm ddo ddp ddr ddu de- ded dee dem deo dep der deu dmd dme dmm dmo dmp dmr dmu dod doe dom doo dop dor dou dpd dpe dpm dpo dpp dpr dpu drd dre drm dro drp drr dru dud due dum duo dup dur ed- edd ede edm edo edp edr edu eed eee eem eeo eep eer em- emd eme emm emo emp emr emu eo- eod eoe eom eoo eop eor eou ep- epd epe epm epo epp epr epu erd ere erm ero erp err eru eu- eud eue eup eur m-o m-r mdd mde mdm mdo mdp mdr mdu med mee mem meo mep mer meu mmd mme mmm mmo mmp mmr mmu mod moe mom moo mop mor mou mpd mpe mpm mpo mpp mpr mpu mrd mre mrm mro mrp mrr mru mud mue mum mup mur muu odd ode odm odo odp odr odu oed oee oem oeo oep oer om- omd ome omm omo omp omr omu oo- ood oom ooo oop oor op- opd ope opm opo opp opr or- ord ore orm oro orp orr oru ou- oud oue oum ouo oup our p-p pdd pde pdm pdo pdp pdr pdu ped pee pem peo pep per peu pmd pme pmm pmo pmp pmr pmu pod poe pom poo pop por pou ppd ppe ppm ppo ppp ppr ppu prd pre prm pro prp prr pru pud pue pum pup pur puu rdd rde rdm rdo rdp rdr rdu re- red ree rem reo rep rer reu rmd rme rmm rmo rmp rmr rod roe rom roo rop ror rou rpd rpe rpm rpo rpp rpr rpu rrd rrm rrp rrr rru rud rue rum ruo rup rur ruu udd ude udm udo udp udr udu ued uee uem uep uer um- umd ume umm umo ump umr umu uod uoe uom uoo uop uor up- upd upe upm upo upp upr upu ur- urd ure urm uro urp urr uru uue uum uur uuu