ddd ddf ddi ddo dds dfd dff dfi dfo dfs di- did dif dii dio dis dod dof doi doo dos dsd dsf dsi dso dss fdd fdf fdi fdo fds ffd fff ffi ffo ffs fid fif fii fis fof foi foo fos fsd fsf fsi fso fss i-d i-f idd idf idi ido ids ifd iff ifi ifo ifs iid iif iii iio iis io- iod iof ioi ioo ios is- isd isf isi iso iss o-i odd odf odi odo ods of- ofd off ofi ofo ofs oid oif oii oio ois oo- ood oof ooi ooo oos os- osd osf osi oso oss sdd sdf sdi sdo sds sfd sff sfi sfo sfs sid sif sii sio sis sod sof soi soo sos ss- ssd ssf ssi sso sss