ddd ddn ddo ddp dds ddt ddy dnd dnn dno dnp dns dnt dny dod don doo dop dos dot doy dpd dpn dpo dpp dps dpt dsd dsn dso dsp dss dst dsy dtd dtn dto dtp dts dtt dty dy- dyd dyn dyo dyp dys dyy ndd ndn ndo ndp nds ndt ndy nnn nno nnp nns nnt no- nod non noo nop nos not noy npd npn npo npp nps npt nsd nsn nso nsp nss nst nsy ntd ntn nto ntp nts ntt nyd nyn nyo nyp nys nyt nyy odd odn odo odp ods odt on- ond onn ono onp ons ont ony oo- ood oon ooo oop oos oot op- opd opn opo opp ops opt opy os- osd osn oso osp oss ost ot- otd otn oto otp ots ott oyd oyo oys p-p pdd pdn pdo pdp pds pdt pn- pnd pnn pno pnp pns pnt pny pod pon poo pop pos pot poy ppd ppn ppo ppp pps ppt ps- psd psn pso psp pss pst psy pt- ptd ptn pto ptp pts ptt pty py- pyd pyn pyo pys pyt sdd sdn sdo sdp sds sdt sdy snd snn sno snp sns snt sny sod son soo sop sos sot soy spd spn spo spp sps spt spy ss- ssd ssn sso ssp sss sst std stn sto stp sts stt sty sy- syd syn syp sys syt tdd tdn tdo tdp tds tdt tdy tnd tnn tno tnp tns tnt to- tod ton too top tos tot toy tpd tpn tpo tpp tps tpt tsd tsn tso tsp tss tst tsy ttd ttn tto ttp tts ttt tty tyd tyn tyo typ tys tyt ydn ydo yds ydt ydy ynd ynn ynp yns yny yod yon yoo yop yos yot yoy ypd ypo yps yso ysp yss yst ysy ytd ytn yto ytp yts ytt yys yyt yyy