-er ddd dde ddm ddn ddo ddp ddr de- ded dee dem den deo dep der dmd dme dmm dmn dmo dmp dmr dnd dne dnm dnn dno dnp dnr dod doe dom don doo dop dor dpd dpe dpm dpn dpo dpp dpr drd dre drm drn dro drp drr ed- edd ede edm edn edo edp edr eed eee eem een eeo eep eer em- emd eme emm emn emo emp emr en- end ene enm enn eno enp enr eo- eod eoe eom eon eoo eop eor ep- epd epe epm epn epo epp epr erd ere erm ern ero erp err m-o m-r mdd mde mdm mdn mdo mdp mdr med mee mem men meo mep mer mmd mme mmm mmn mmo mmp mmr mne mnm mnn mno mnp mnr mod moe mom mon moo mop mor mpd mpe mpm mpn mpo mpp mpr mrd mre mrm mrn mro mrp mrr ndd nde ndm ndn ndo ndp ndr ne- ned nee nem nen neo nep ner nmd nme nmm nmn nmo nmp nmr nne nnm nnn nno nnp no- nod noe nom non noo nop nor npd npe npm npn npo npp npr nrd nre nrm nrn nro nrp nrr odd ode odm odn odo odp odr oed oee oem oen oeo oep oer om- omd ome omm omn omo omp omr on- ond one onn ono onp onr oo- ood oom oon ooo oop oor op- opd ope opm opn opo opp opr or- ord ore orm orn oro orp orr p-p pdd pde pdm pdn pdo pdp pdr ped pee pem pen peo pep per pmd pme pmm pmn pmo pmp pmr pn- pnd pne pnm pnn pno pnp pnr pod poe pom pon poo pop por ppd ppe ppm ppn ppo ppp ppr prd pre prm prn pro prp prr rdd rde rdm rdn rdo rdp rdr re- red ree rem ren reo rep rer rmd rme rmm rmn rmo rmp rmr rnd rnm rnn rno rnp rnr rod roe rom ron roo rop ror rpd rpe rpm rpn rpo rpp rpr rrd rrm rrn rrp rrr