ddd dde ddf ddg ddl de- ded dee def deg del dfd dfe dff dfg dfl dgd dge dgf dgg dgl dl- dld dle dlf dlg dll ed- edd ede edf edg edl eed eee eef eeg eel ef- efd efe eff efg efl egd ege egf egg egl eld ele elf elg ell fdd fde fdf fdg fdl fed fee fef feg fel ffd ffe fff ffg ffl fgd fge fgf fgg fgl fld fle flf flg fll g-d gdd gde gdf gdl ge- ged gee gef geg gel gfd gfe gff gfl ggd ggg gld gle glf glg gll ldd lde ldf ldg ldl led lee lef leg lel lfd lfe lff lfg lfl lgd lge lgf lgg lgl lld lle llf llg lll