-ol b-u bbb bbg bbl bbo bbr bbs bbu bgb bgg bgl bgo bgr bgs bgu blb blg bll blo blr bls blu bob bog bol boo bor bos bou brb brg brl bro brr brs bru bsb bsg bsl bso bsr bss bsu bub bug bul buo bur bus buu gbg gbl gbo gbr gbs gbu ggb ggg ggo ggr ggs ggu glb glg gll glo glr gls glu gob gog gol goo gor gos gou grb grg grl gro grr grs gru gsb gsg gsl gso gsr gss gsu gu- gub gug gul guo gur gus guu lbb lbg lbl lbo lbr lbs lbu lgb lgg lgl lgo lgr lgs lgu llb llg lll llo llr lls llu lob log lol loo lor los lou lrb lrg lro lrr lrs lru lsb lsg lsl lso lsr lss lsu lub lug lul luo lur lus luu ob- obb obg obl obo obr obs obu ogg ogl ogo ogs olb olg oll olo ols olu oo- oob oog ool ooo oor oos or- orb org orl oro orr ors oru os- osb osg osl oso osr oss osu ou- oul ouo our ous rbb rbg rbl rbo rbr rbs rbu rgb rgg rgo rgr rgs rlg rll rlo rlr rls rlu rob rog rol roo ror ros rou rrb rrg rrl rrr rrs rru rsb rsg rsl rso rsr rss rsu rub rug ruo rur rus ruu sbb sbg sbl sbo sbr sbs sbu sgb sgg sgl sgo sgr sgs sgu slb slg sll slo slr sls slu sob sog sol soo sor sos sou sr- srb srg srl sro srr srs ss- ssb ssg ssl sso ssr sss ssu sub sug sul suo sur sus suu ubb ubg ubl ubo ubr ubs ubu ugb ugg ugl ugo ugr ugs ugu ulb ulg ull ulo ulr uls ulu uob uog uol uoo uor uos ur- urb urg url uro urr urs uru usb usg usl uso usr uss usu uug uur uus uuu