-th ddd ddh ddo ddt ddy dh- dhd dhh dho dht dod doh doo dot doy dtd dth dto dtt dty dy- dyd dyo dyy hdd hdh hdo hdt hdy hhd hhh hho hht hhy hod hoh hoo hot hoy htd hth hto htt hty hy- hyd hyh hyo hyt hyy odd odh odo odt ohd ohh oho oht oo- ood ooh ooo oot ot- otd oth oto ott oyd oyo tdd tdh tdo tdt tdy th- thd thh tho tht thy to- tod toh too tot toy ttd tth tto ttt tty tyd tyo tyt ydo ydt ydy yht yod yoo yot yoy ytd yth yto ytt yyt yyy