-er ddd dde ddk ddn ddo ddp ddr de- ded dee dek den deo dep der dke dkk dko dkp dkr dnd dne dnk dnn dno dnp dnr dod doe dok don doo dop dor dpd dpe dpk dpn dpo dpp dpr drd dre drk drn dro drp drr ed- edd ede edk edn edo edp edr eed eee eek een eeo eep eer ekd eke eko ekp ekr en- end ene enk enn eno enp enr eo- eod eoe eok eon eoo eop eor ep- epd epe epn epo epp epr erd ere erk ern ero erp err kde kdk kdo kdp kdr ke- ked kee kek ken keo kep ker kke kkk kkn kkp kkr kn- knd kne knk knn kno knp knr kod koe kok kon koo kop kor kpd kpe kpk kpn kpo kpp kpr krd krk krn kro krp krr ndd nde ndk ndn ndo ndp ndr ne- ned nee nek nen neo nep ner nke nkk nkn nko nkp nkr nne nnk nnn nno nnp no- nod noe nok non noo nop nor npd npe npn npo npp npr nrd nre nrk nrn nro nrp nrr odd ode odn odo odp odr oed oee oen oeo oep oer okd oke okk oko okp okr on- ond one onk onn ono onp onr oo- ood ook oon ooo oop oor op- opd ope opk opn opo opp opr or- ord ore ork orn oro orp orr p-p pdd pde pdk pdn pdo pdp pdr ped pee pek pen peo pep per pkd pke pkn pko pkp pkr pn- pnd pne pnk pnn pno pnp pnr pod poe pok pon poo pop por ppd ppe ppk ppn ppo ppp ppr prd pre prk prn pro prp prr rdd rde rdn rdo rdp rdr re- red ree rek ren reo rep rer rke rkk rko rkp rnd rnn rno rnp rnr rod roe rok ron roo rop ror rpd rpe rpk rpn rpo rpp rpr rrd rrk rrn rrp rrr