ddd ddn ddo dds ddt ddy dnd dnn dno dns dnt dny dod don doo dos dot doy dsd dsn dso dss dst dsy dtd dtn dto dts dtt dty dy- dyd dyn dyo dys dyy ndd ndn ndo nds ndt ndy nnn nno nns nnt no- nod non noo nos not noy nsd nsn nso nss nst nsy ntd ntn nto nts ntt nyd nyn nyo nys nyt nyy odd odn odo ods odt on- ond onn ono ons ont ony oo- ood oon ooo oos oot os- osd osn oso oss ost ot- otd otn oto ots ott oyd oyo oys sdd sdn sdo sds sdt sdy snd snn sno sns snt sny sod son soo sos sot soy ss- ssd ssn sso sss sst std stn sto sts stt sty sy- syd syn sys syt tdd tdn tdo tds tdt tdy tnd tnn tno tns tnt to- tod ton too tos tot toy tsd tsn tso tss tst tsy ttd ttn tto tts ttt tty tyd tyn tyo tys tyt ydn ydo yds ydt ydy ynd ynn yns yny yod yon yoo yos yot yoy yso yss yst ysy ytd ytn yto yts ytt yys yyt yyy