-ol ddd ddf ddl ddo ddr ddx dfd dff dfl dfo dfr dfx dl- dld dlf dll dlo dlr dlx dod dof dol doo dor dox drd drl dro drr drx dxd dxl dxo dxr dxx fdd fdf fdl fdo fdr fdx ffd fff ffl ffo ffr ffx fld flf fll flo flr flx fof fol foo for fox frd frf frl fro frr fxr fxx ldd ldf ldl ldo ldr lfd lff lfl lfo lfr lfx lld llf lll llo llr lod lof lol loo lor lox lrd lrf lro lrr lxd lxo lxr lxx odd odf odl odo odr of- ofd off ofl ofo ofr ofx old olf oll olo oo- ood oof ool ooo oor oox or- ord orf orl oro orr orx ox- oxf oxo oxx rdd rdf rdl rdo rdr rdx rfd rff rfl rfo rfr rld rlf rll rlo rlr rod rof rol roo ror rox rrd rrf rrl rrr rxr xdf xdr xfl xfx xld xlf xlr xod xof xoo xor xox xrd xrf xrx xxl xxo xxx