-er -ol bbb bbe bbg bbi bbl bbo bbr be- beb bee beg bei bel beo ber bgb bge bgg bgi bgl bgo bgr bi- bib bie big bii bil bio bir blb ble blg bli bll blo blr bob boe bog boi bol boo bor brb bre brg bri brl bro brr ebb ebe ebg ebi ebl ebo ebr eeb eee eeg eel eeo eer egb ege egg egi egl ego egr eib eie eig eii eil eio eir elb ele elg eli ell elo elr eo- eob eoe eog eoi eol eoo eor erb ere erg eri erl ero err gbe gbg gbi gbl gbo gbr ge- geb gee geg gei gel geo ger ggb ggg ggi ggo ggr gib gie gig gii gil gio gir glb gle glg gli gll glo glr gob goe gog goi gol goo gor grb gre grg gri grl gro grr ibb ibe ibg ibi ibl ibo ibr ie- iee ieg iei iel ier igb ige igg igi igl igo igr iib iie iii iil iio iir il- ilb ile ilg ili ill ilo ilr io- iob ioe iog ioi iol ioo ior ir- irb ire irg iri irl iro irr lbb lbe lbg lbi lbl lbo lbr leb lee leg lei lel leo ler lgb lge lgg lgi lgl lgo lgr lib lie lig lii lil lio lir llb lle llg lli lll llo llr lob loe log loi lol loo lor lrb lrg lri lro lrr o-i ob- obb obe obg obi obl obo obr oeb oee oeg oei oel oeo oer oge ogg ogi ogl ogo oib oie oii oil oio oir olb ole olg oli oll olo oo- oob oog ooi ool ooo oor or- orb ore org ori orl oro orr rbb rbe rbg rbi rbl rbo rbr re- reb ree reg rei rel reo rer rgb rge rgg rgi rgo rgr rib rie rig rii ril rio rir rle rlg rli rll rlo rlr rob roe rog roi rol roo ror rrb rrg rri rrl rrr