-ol ddd ddf ddl ddo dds ddt dfd dff dfl dfo dfs dft dl- dld dlf dll dlo dls dlt dod dof dol doo dos dot dsd dsf dsl dso dss dst dtd dtf dtl dto dts dtt fdd fdf fdl fdo fds fdt ffd fff ffl ffo ffs fft fld flf fll flo fls flt fof fol foo fos fot fsd fsf fsl fso fss fst ftd ftf ftl fto fts ftt ldd ldf ldl ldo lds ldt lfd lff lfl lfo lfs lft lld llf lll llo lls llt lod lof lol loo los lot lsd lsf lsl lso lss lst ltd ltf ltl lto lts ltt odd odf odl odo ods odt of- ofd off ofl ofo ofs oft old olf oll olo ols olt oo- ood oof ool ooo oos oot os- osd osf osl oso oss ost ot- otd otf otl oto ots ott sdd sdf sdl sdo sds sdt sfd sff sfl sfo sfs sft sld slf sll slo sls slt sod sof sol soo sos sot ss- ssd ssf ssl sso sss sst std stf stl sto sts stt tdd tdf tdl tdo tds tdt tfd tff tfl tfo tfs tft tld tlf tll tlo tls tlt to- tod tof tol too tos tot tsd tsf tsl tso tss tst ttd ttf ttl tto tts ttt