-er -ol bbb bbe bbg bbi bbl bbo bbr bbs be- beb bee beg bei bel beo ber bes bgb bge bgg bgi bgl bgo bgr bgs bi- bib bie big bii bil bio bir bis blb ble blg bli bll blo blr bls bob boe bog boi bol boo bor bos brb bre brg bri brl bro brr brs bsb bse bsg bsi bsl bso bsr bss ebb ebe ebg ebi ebl ebo ebr ebs eeb eee eeg eel eeo eer ees egb ege egg egi egl ego egr egs eib eie eig eii eil eio eir eis elb ele elg eli ell elo elr els eo- eob eoe eog eoi eol eoo eor eos erb ere erg eri erl ero err ers es- esb ese esg esi esl eso esr ess gbe gbg gbi gbl gbo gbr gbs ge- geb gee geg gei gel geo ger ges ggb ggg ggi ggo ggr ggs gib gie gig gii gil gio gir gis glb gle glg gli gll glo glr gls gob goe gog goi gol goo gor gos grb gre grg gri grl gro grr grs gsb gse gsg gsi gsl gso gsr gss ibb ibe ibg ibi ibl ibo ibr ibs ie- iee ieg iei iel ier ies igb ige igg igi igl igo igr igs iib iie iii iil iio iir iis il- ilb ile ilg ili ill ilo ilr ils io- iob ioe iog ioi iol ioo ior ios ir- irb ire irg iri irl iro irr irs is- isb ise isg isi isl iso isr iss lbb lbe lbg lbi lbl lbo lbr lbs leb lee leg lei lel leo ler les lgb lge lgg lgi lgl lgo lgr lgs lib lie lig lii lil lio lir lis llb lle llg lli lll llo llr lls lob loe log loi lol loo lor los lrb lrg lri lro lrr lrs lsb lse lsg lsi lsl lso lsr lss o-i ob- obb obe obg obi obl obo obr obs oeb oee oeg oei oel oeo oer oes oge ogg ogi ogl ogo ogs oib oie oii oil oio oir ois olb ole olg oli oll olo ols oo- oob oog ooi ool ooo oor oos or- orb ore org ori orl oro orr ors os- osb ose osg osi osl oso osr oss rbb rbe rbg rbi rbl rbo rbr rbs re- reb ree reg rei rel reo rer res rgb rge rgg rgi rgo rgr rgs rib rie rig rii ril rio rir ris rle rlg rli rll rlo rlr rls rob roe rog roi rol roo ror ros rrb rrg rri rrl rrr rrs rsb rse rsg rsi rsl rso rsr rss sbb sbe sbg sbi sbl sbo sbr sbs se- seb see seg sei sel seo ser ses sgb sge sgg sgi sgl sgo sgr sgs sib sie sig sii sil sio sir sis slb sle slg sli sll slo slr sls sob soe sog soi sol soo sor sos sr- srb sre srg sri srl sro srr srs ss- ssb sse ssg ssi ssl sso ssr sss