-ol bbb bbe bbg bbk bbl bbo bbs be- beb bee beg bek bel beo bes bgb bge bgg bgk bgl bgo bgs bkb bke bkg bkk bkl bko bks blb ble blg blk bll blo bls bob boe bog bok bol boo bos bsb bse bsg bsk bsl bso bss ebb ebe ebg ebk ebl ebo ebs eeb eee eeg eek eel eeo ees egb ege egg egl ego egs ekb eke ekg ekl eko eks elb ele elg elk ell elo els eo- eob eoe eog eok eol eoo eos es- esb ese esg esk esl eso ess gbe gbg gbk gbl gbo gbs ge- geb gee geg gek gel geo ges ggb ggg ggo ggs gkb gko gks glb gle glg glk gll glo gls gob goe gog gok gol goo gos gsb gse gsg gsk gsl gso gss kbb kbe kbk kbl kbo kbs ke- keb kee keg kek kel keo kes kgb kgl kgo kgs kkb kke kkk kkl kks kl- klb klg klo kls kob koe kog kok kol koo kos ksb kse ksg ksk ksl kso kss lbb lbe lbg lbk lbl lbo lbs leb lee leg lek lel leo les lgb lge lgg lgk lgl lgo lgs lkb lkg lkl lks llb lle llg llk lll llo lls lob loe log lok lol loo los lsb lse lsg lsk lsl lso lss ob- obb obe obg obk obl obo obs oeb oee oeg oel oeo oes oge ogg ogl ogo ogs okb oke okg okk okl oko oks olb ole olg olk oll olo ols oo- oob oog ook ool ooo oos os- osb ose osg osk osl oso oss sbb sbe sbg sbk sbl sbo sbs se- seb see seg sek sel seo ses sgb sge sgg sgk sgl sgo sgs sk- skb ske skg skk skl sko sks slb sle slg slk sll slo sls sob soe sog sok sol soo sos ss- ssb sse ssg ssk ssl sso sss