ddd ddf ddo dds ddt ddw dfd dff dfo dfs dft dfw dod dof doo dos dot dow dsd dsf dso dss dst dsw dtd dtf dto dts dtt dtw dwf dwo dws dwt dww fdd fdf fdo fds fdt ffd fff ffo ffs fft ffw fof foo fos fot fow fsd fsf fso fss fst fsw ftd ftf fto fts ftt ftw fwd fwf fwo fws fwt odd odf odo ods odt of- ofd off ofo ofs oft ofw oo- ood oof ooo oos oot oow os- osd osf oso oss ost osw ot- otd otf oto ots ott otw owd owf owo ows owt oww sdd sdf sdo sds sdt sdw sfd sff sfo sfs sft sfw sod sof soo sos sot sow ss- ssd ssf sso sss sst ssw std stf sto sts stt stw swd swf swo sws swt tdd tdf tdo tds tdt tdw tfd tff tfo tfs tft tfw to- tod tof too tos tot tow tsd tsf tso tss tst tsw ttd ttf tto tts ttt ttw twd twf two tws twt tww wdf wds wdt wfd wff wfo wfs wft wfw wod wof woo wos wot wow wsd wsf wso wss wst wsw wtd wtf wto wts wtt wtw wwd wwf wwo wwt www