-ol ddd dde ddf ddl ddo dds ddt de- ded dee def del deo des det dfd dfe dff dfl dfo dfs dft dl- dld dle dlf dll dlo dls dlt dod doe dof dol doo dos dot dsd dse dsf dsl dso dss dst dtd dte dtf dtl dto dts dtt ed- edd ede edf edl edo eds edt eed eee eef eel eeo ees eet ef- efd efe eff efl efo efs eft eld ele elf ell elo els elt eo- eod eoe eof eol eoo eos eot es- esd ese esf esl eso ess est etd ete etf etl eto ets ett fdd fde fdf fdl fdo fds fdt fed fee fef fel feo fes fet ffd ffe fff ffl ffo ffs fft fld fle flf fll flo fls flt foe fof fol foo fos fot fsd fse fsf fsl fso fss fst ftd fte ftf ftl fto fts ftt ldd lde ldf ldl ldo lds ldt led lee lef lel leo les let lfd lfe lff lfl lfo lfs lft lld lle llf lll llo lls llt lod loe lof lol loo los lot lsd lse lsf lsl lso lss lst ltd lte ltf ltl lto lts ltt odd ode odf odl odo ods odt oed oee oef oel oeo oes oet of- ofd ofe off ofl ofo ofs oft old ole olf oll olo ols olt oo- ood oof ool ooo oos oot os- osd ose osf osl oso oss ost ot- otd ote otf otl oto ots ott sdd sde sdf sdl sdo sds sdt se- sed see sef sel seo ses set sfd sfe sff sfl sfo sfs sft sld sle slf sll slo sls slt sod soe sof sol soo sos sot ss- ssd sse ssf ssl sso sss sst std ste stf stl sto sts stt tdd tde tdf tdl tdo tds tdt te- ted tee tef tel teo tes tet tfd tfe tff tfl tfo tfs tft tld tle tlf tll tlo tls tlt to- tod toe tof tol too tos tot tsd tse tsf tsl tso tss tst ttd tte ttf ttl tto tts ttt