-er -ol bbb bbe bbg bbi bbl bbo bbr bbt be- beb bee beg bei bel beo ber bet bgb bge bgg bgi bgl bgo bgr bgt bi- bib bie big bii bil bio bir bit blb ble blg bli bll blo blr blt bob boe bog boi bol boo bor bot brb bre brg bri brl bro brr brt btb bte btg bti btl bto btr btt ebb ebe ebg ebi ebl ebo ebr ebt eeb eee eeg eel eeo eer eet egb ege egg egi egl ego egr egt eib eie eig eii eil eio eir eit elb ele elg eli ell elo elr elt eo- eob eoe eog eoi eol eoo eor eot erb ere erg eri erl ero err ert etb ete etg eti etl eto etr ett gbe gbg gbi gbl gbo gbr gbt ge- geb gee geg gei gel geo ger get ggb ggg ggi ggo ggr ggt gib gie gig gii gil gio gir git glb gle glg gli gll glo glr glt gob goe gog goi gol goo gor got grb gre grg gri grl gro grr grt gtb gte gtg gti gtl gto gtr gtt ibb ibe ibg ibi ibl ibo ibr ibt ie- iee ieg iei iel ier iet igb ige igg igi igl igo igr igt iib iie iii iil iio iir iit il- ilb ile ilg ili ill ilo ilr ilt io- iob ioe iog ioi iol ioo ior iot ir- irb ire irg iri irl iro irr irt itb ite itg iti itl ito itt lbb lbe lbg lbi lbl lbo lbr lbt leb lee leg lei lel leo ler let lgb lge lgg lgi lgl lgo lgr lgt lib lie lig lii lil lio lir lit llb lle llg lli lll llo llr llt lob loe log loi lol loo lor lot lrb lrg lri lro lrr lrt ltb lte ltg lti ltl lto ltr ltt o-i ob- obb obe obg obi obl obo obr obt oeb oee oeg oei oel oeo oer oet oge ogg ogi ogl ogo ogt oib oie oii oil oio oir oit olb ole olg oli oll olo olt oo- oob oog ooi ool ooo oor oot or- orb ore org ori orl oro orr ort ot- otb ote otg oti otl oto otr ott rbb rbe rbg rbi rbl rbo rbr rbt re- reb ree reg rei rel reo rer ret rgb rge rgg rgi rgo rgr rgt rib rie rig rii ril rio rir rit rle rlg rli rll rlo rlr rlt rob roe rog roi rol roo ror rot rrb rrg rri rrl rrr rrt rtb rte rtg rti rtl rto rtr rtt tbb tbe tbg tbi tbl tbo tbr tbt te- teb tee teg tei tel teo ter tet tgb tge tgg tgi tgl tgo tgr tgt tib tie tig tii til tio tir tit tle tlg tli tll tlo tlr tlt to- tob toe tog toi tol too tor tot trb tre trg tri trl tro trr trt ttb tte ttg tti ttl tto ttr ttt