-er ddd dde ddf ddn ddo ddp ddr de- ded dee def den deo dep der dfd dfe dff dfn dfo dfp dfr dnd dne dnf dnn dno dnp dnr dod doe dof don doo dop dor dpd dpe dpf dpn dpo dpp dpr drd dre drn dro drp drr ed- edd ede edf edn edo edp edr eed eee eef een eeo eep eer ef- efd efe eff efo efp efr en- end ene enf enn eno enp enr eo- eod eoe eof eon eoo eop eor ep- epd epe epf epn epo epp epr erd ere erf ern ero erp err fdd fde fdf fdn fdo fdp fdr fed fee fef fen feo fep fer ffd ffe fff ffn ffo ffp ffr fnd fne fnf fnn fnp fnr foe fof fon foo fop for fpd fpe fpn fpo fpp fpr frd fre frf frn fro frp frr ndd nde ndf ndn ndo ndp ndr ne- ned nee nef nen neo nep ner nfd nfe nff nfn nfo nfp nfr nne nnf nnn nno nnp no- nod noe nof non noo nop nor npd npe npf npn npo npp npr nrd nre nrf nrn nro nrp nrr odd ode odf odn odo odp odr oed oee oef oen oeo oep oer of- ofd ofe off ofn ofo ofp ofr on- ond one onf onn ono onp onr oo- ood oof oon ooo oop oor op- opd ope opf opn opo opp opr or- ord ore orf orn oro orp orr p-p pdd pde pdf pdn pdo pdp pdr ped pee pef pen peo pep per pfd pfe pff pfn pfo pfp pfr pn- pnd pne pnf pnn pno pnp pnr pod poe pof pon poo pop por ppd ppe ppf ppn ppo ppp ppr prd pre prf prn pro prp prr rdd rde rdf rdn rdo rdp rdr re- red ree ref ren reo rep rer rfd rfe rff rfn rfo rfp rfr rnd rnn rno rnp rnr rod roe rof ron roo rop ror rpd rpe rpf rpn rpo rpp rpr rrd rrf rrn rrp rrr