ddd dde ddn ddp ddq de- ded dee den dep deq dnd dne dnn dnp dnq dpd dpe dpn dpp dqe dqn ed- edd ede edn edp eed eee een eep en- end ene enn enp ep- epd epe epn epp epq eqe eqn eqp eqq ndd nde ndn ndp ne- ned nee nen nep nne nnn nnp npd npe npn npp p-p pdd pde pdn pdp pdq ped pee pen pep pn- pnd pne pnn pnp ppd ppe ppn ppp ppq pqq qed qee qen qep qnd qne qpp qqq