ddd ddn ddo ddp ddy dnd dnn dno dnp dny dod don doo dop doy dpd dpn dpo dpp dy- dyd dyn dyo dyp dyy ndd ndn ndo ndp ndy nnn nno nnp no- nod non noo nop noy npd npn npo npp nyd nyn nyo nyp nyy odd odn odo odp on- ond onn ono onp ony oo- ood oon ooo oop op- opd opn opo opp opy oyd oyo p-p pdd pdn pdo pdp pn- pnd pnn pno pnp pny pod pon poo pop poy ppd ppn ppo ppp py- pyd pyn pyo ydn ydo ydy ynd ynn ynp yny yod yon yoo yop yoy ypd ypo yyy