ddd dde ddn ddo ddp de- ded dee den deo dep dnd dne dnn dno dnp dod doe don doo dop dpd dpe dpn dpo dpp ed- edd ede edn edo edp eed eee een eeo eep en- end ene enn eno enp eo- eod eoe eon eoo eop ep- epd epe epn epo epp ndd nde ndn ndo ndp ne- ned nee nen neo nep nne nnn nno nnp no- nod noe non noo nop npd npe npn npo npp odd ode odn odo odp oed oee oen oeo oep on- ond one onn ono onp oo- ood oon ooo oop op- opd ope opn opo opp p-p pdd pde pdn pdo pdp ped pee pen peo pep pn- pnd pne pnn pno pnp pod poe pon poo pop ppd ppe ppn ppo ppp