-ol ddd dde ddf ddl ddo ddt de- ded dee def del deo det dfd dfe dff dfl dfo dft dl- dld dle dlf dll dlo dlt dod doe dof dol doo dot dtd dte dtf dtl dto dtt ed- edd ede edf edl edo edt eed eee eef eel eeo eet ef- efd efe eff efl efo eft eld ele elf ell elo elt eo- eod eoe eof eol eoo eot etd ete etf etl eto ett fdd fde fdf fdl fdo fdt fed fee fef fel feo fet ffd ffe fff ffl ffo fft fld fle flf fll flo flt foe fof fol foo fot ftd fte ftf ftl fto ftt ldd lde ldf ldl ldo ldt led lee lef lel leo let lfd lfe lff lfl lfo lft lld lle llf lll llo llt lod loe lof lol loo lot ltd lte ltf ltl lto ltt odd ode odf odl odo odt oed oee oef oel oeo oet of- ofd ofe off ofl ofo oft old ole olf oll olo olt oo- ood oof ool ooo oot ot- otd ote otf otl oto ott tdd tde tdf tdl tdo tdt te- ted tee tef tel teo tet tfd tfe tff tfl tfo tft tld tle tlf tll tlo tlt to- tod toe tof tol too tot ttd tte ttf ttl tto ttt