-er -ol bbb bbd bbe bbf bbg bbl bbo bbr bdb bdd bde bdf bdg bdl bdo bdr be- beb bed bee bef beg bel beo ber bfb bfd bfe bff bfg bfl bfo bfr bgb bgd bge bgf bgg bgl bgo bgr blb bld ble blf blg bll blo blr bob bod boe bof bog bol boo bor brb brd bre brf brg brl bro brr dbb dbd dbe dbf dbg dbl dbo dbr ddb ddd dde ddf ddg ddl ddo ddr de- deb ded dee def deg del deo der dfb dfd dfe dff dfg dfl dfo dfr dgd dge dgf dgg dgl dgr dl- dlb dld dle dlf dlg dll dlo dlr dob dod doe dof dog dol doo dor drb drd dre drg drl dro drr ebb ebd ebe ebf ebg ebl ebo ebr ed- edb edd ede edf edg edl edo edr eeb eed eee eef eeg eel eeo eer ef- efb efd efe eff efg efl efo efr egb egd ege egf egg egl ego egr elb eld ele elf elg ell elo elr eo- eob eod eoe eof eog eol eoo eor erb erd ere erf erg erl ero err fbb fbd fbe fbf fbg fbl fbo fbr fdb fdd fde fdf fdg fdl fdo fdr feb fed fee fef feg fel feo fer ffd ffe fff ffg ffl ffo ffr fgb fgd fge fgf fgg fgl fgr flb fld fle flf flg fll flo flr fob foe fof fog fol foo for frb frd fre frf frg frl fro frr g-d gbd gbe gbf gbg gbl gbo gbr gdb gdd gde gdf gdl gdo gdr ge- geb ged gee gef geg gel geo ger gfb gfd gfe gff gfl gfo gfr ggb ggd ggg ggo ggr glb gld gle glf glg gll glo glr gob god goe gof gog gol goo gor grb grd gre grf grg grl gro grr lbb lbd lbe lbf lbg lbl lbo lbr ldb ldd lde ldf ldg ldl ldo ldr leb led lee lef leg lel leo ler lfb lfd lfe lff lfg lfl lfo lfr lgb lgd lge lgf lgg lgl lgo lgr llb lld lle llf llg lll llo llr lob lod loe lof log lol loo lor lrb lrd lrf lrg lro lrr ob- obb obd obe obf obg obl obo obr odb odd ode odf odg odl odo odr oeb oed oee oef oeg oel oeo oer of- ofb ofd ofe off ofg ofl ofo ofr ogd oge ogf ogg ogl ogo olb old ole olf olg oll olo oo- oob ood oof oog ool ooo oor or- orb ord ore orf org orl oro orr rbb rbd rbe rbf rbg rbl rbo rbr rdb rdd rde rdf rdg rdl rdo rdr re- reb red ree ref reg rel reo rer rfb rfd rfe rff rfg rfl rfo rfr rgb rgd rge rgf rgg rgo rgr rld rle rlf rlg rll rlo rlr rob rod roe rof rog rol roo ror rrb rrd rrf rrg rrl rrr