ddd ddf ddo dds ddy dfd dff dfo dfs dod dof doo dos doy dsd dsf dso dss dsy dy- dyd dyo dys dyy fdd fdf fdo fds ffd fff ffo ffs ffy fof foo fos foy fsd fsf fso fss fy- fyo odd odf odo ods of- ofd off ofo ofs oo- ood oof ooo oos os- osd osf oso oss oyd oyo oys sdd sdf sdo sds sdy sfd sff sfo sfs sod sof soo sos soy ss- ssd ssf sso sss sy- syd sys ydo yds ydy yfd yff yfs yod yof yoo yos yoy yso yss ysy yyf yys yyy