-er -ol bbb bbd bbe bbg bbl bbo bbr bdb bdd bde bdg bdl bdo bdr be- beb bed bee beg bel beo ber bgb bgd bge bgg bgl bgo bgr blb bld ble blg bll blo blr bob bod boe bog bol boo bor brb brd bre brg brl bro brr dbb dbd dbe dbg dbl dbo dbr ddb ddd dde ddg ddl ddo ddr de- deb ded dee deg del deo der dgd dge dgg dgl dgr dl- dlb dld dle dlg dll dlo dlr dob dod doe dog dol doo dor drb drd dre drg drl dro drr ebb ebd ebe ebg ebl ebo ebr ed- edb edd ede edg edl edo edr eeb eed eee eeg eel eeo eer egb egd ege egg egl ego egr elb eld ele elg ell elo elr eo- eob eod eoe eog eol eoo eor erb erd ere erg erl ero err g-d gbd gbe gbg gbl gbo gbr gdb gdd gde gdl gdo gdr ge- geb ged gee geg gel geo ger ggb ggd ggg ggo ggr glb gld gle glg gll glo glr gob god goe gog gol goo gor grb grd gre grg grl gro grr lbb lbd lbe lbg lbl lbo lbr ldb ldd lde ldg ldl ldo ldr leb led lee leg lel leo ler lgb lgd lge lgg lgl lgo lgr llb lld lle llg lll llo llr lob lod loe log lol loo lor lrb lrd lrg lro lrr ob- obb obd obe obg obl obo obr odb odd ode odg odl odo odr oeb oed oee oeg oel oeo oer ogd oge ogg ogl ogo olb old ole olg oll olo oo- oob ood oog ool ooo oor or- orb ord ore org orl oro orr rbb rbd rbe rbg rbl rbo rbr rdb rdd rde rdg rdl rdo rdr re- reb red ree reg rel reo rer rgb rgd rge rgg rgo rgr rld rle rlg rll rlo rlr rob rod roe rog rol roo ror rrb rrd rrg rrl rrr