-er -ol bbb bbe bbg bbi bbl bbo bbr bbs bbt be- beb bee beg bei bel beo ber bes bet bgb bge bgg bgi bgl bgo bgr bgs bgt bi- bib bie big bii bil bio bir bis bit blb ble blg bli bll blo blr bls blt bob boe bog boi bol boo bor bos bot brb bre brg bri brl bro brr brs brt bsb bse bsg bsi bsl bso bsr bss bst btb bte btg bti btl bto btr bts btt ebb ebe ebg ebi ebl ebo ebr ebs ebt eeb eee eeg eel eeo eer ees eet egb ege egg egi egl ego egr egs egt eib eie eig eii eil eio eir eis eit elb ele elg eli ell elo elr els elt eo- eob eoe eog eoi eol eoo eor eos eot erb ere erg eri erl ero err ers ert es- esb ese esg esi esl eso esr ess est etb ete etg eti etl eto etr ets ett gbe gbg gbi gbl gbo gbr gbs gbt ge- geb gee geg gei gel geo ger ges get ggb ggg ggi ggo ggr ggs ggt gib gie gig gii gil gio gir gis git glb gle glg gli gll glo glr gls glt gob goe gog goi gol goo gor gos got grb gre grg gri grl gro grr grs grt gsb gse gsg gsi gsl gso gsr gss gst gtb gte gtg gti gtl gto gtr gts gtt ibb ibe ibg ibi ibl ibo ibr ibs ibt ie- iee ieg iei iel ier ies iet igb ige igg igi igl igo igr igs igt iib iie iii iil iio iir iis iit il- ilb ile ilg ili ill ilo ilr ils ilt io- iob ioe iog ioi iol ioo ior ios iot ir- irb ire irg iri irl iro irr irs irt is- isb ise isg isi isl iso isr iss ist itb ite itg iti itl ito its itt lbb lbe lbg lbi lbl lbo lbr lbs lbt leb lee leg lei lel leo ler les let lgb lge lgg lgi lgl lgo lgr lgs lgt lib lie lig lii lil lio lir lis lit llb lle llg lli lll llo llr lls llt lob loe log loi lol loo lor los lot lrb lrg lri lro lrr lrs lrt lsb lse lsg lsi lsl lso lsr lss lst ltb lte ltg lti ltl lto ltr lts ltt o-i ob- obb obe obg obi obl obo obr obs obt oeb oee oeg oei oel oeo oer oes oet oge ogg ogi ogl ogo ogs ogt oib oie oii oil oio oir ois oit olb ole olg oli oll olo ols olt oo- oob oog ooi ool ooo oor oos oot or- orb ore org ori orl oro orr ors ort os- osb ose osg osi osl oso osr oss ost ot- otb ote otg oti otl oto otr ots ott rbb rbe rbg rbi rbl rbo rbr rbs rbt re- reb ree reg rei rel reo rer res ret rgb rge rgg rgi rgo rgr rgs rgt rib rie rig rii ril rio rir ris rit rle rlg rli rll rlo rlr rls rlt rob roe rog roi rol roo ror ros rot rrb rrg rri rrl rrr rrs rrt rsb rse rsg rsi rsl rso rsr rss rst rtb rte rtg rti rtl rto rtr rts rtt sbb sbe sbg sbi sbl sbo sbr sbs sbt se- seb see seg sei sel seo ser ses set sgb sge sgg sgi sgl sgo sgr sgs sgt sib sie sig sii sil sio sir sis sit slb sle slg sli sll slo slr sls slt sob soe sog soi sol soo sor sos sot sr- srb sre srg sri srl sro srr srs srt ss- ssb sse ssg ssi ssl sso ssr sss sst stb ste stg sti stl sto str sts stt tbb tbe tbg tbi tbl tbo tbr tbs tbt te- teb tee teg tei tel teo ter tes tet tgb tge tgg tgi tgl tgo tgr tgs tgt tib tie tig tii til tio tir tis tit tle tlg tli tll tlo tlr tls tlt to- tob toe tog toi tol too tor tos tot trb tre trg tri trl tro trr trs trt tsb tse tsg tsi tsl tso tsr tss tst ttb tte ttg tti ttl tto ttr tts ttt