bbb bbd bbe bbf bbg bbo bdb bdd bde bdf bdg bdo be- beb bed bee bef beg beo bfb bfd bfe bff bfg bfo bgb bgd bge bgf bgg bgo bob bod boe bof bog boo dbb dbd dbe dbf dbg dbo ddb ddd dde ddf ddg ddo de- deb ded dee def deg deo dfb dfd dfe dff dfg dfo dgd dge dgf dgg dob dod doe dof dog doo ebb ebd ebe ebf ebg ebo ed- edb edd ede edf edg edo eeb eed eee eef eeg eeo ef- efb efd efe eff efg efo egb egd ege egf egg ego eo- eob eod eoe eof eog eoo fbb fbd fbe fbf fbg fbo fdb fdd fde fdf fdg fdo feb fed fee fef feg feo ffd ffe fff ffg ffo fgb fgd fge fgf fgg fob foe fof fog foo g-d gbd gbe gbf gbg gbo gdb gdd gde gdf gdo ge- geb ged gee gef geg geo gfb gfd gfe gff gfo ggb ggd ggg ggo gob god goe gof gog goo ob- obb obd obe obf obg obo odb odd ode odf odg odo oeb oed oee oef oeg oeo of- ofb ofd ofe off ofg ofo ogd oge ogf ogg ogo oo- oob ood oof oog ooo