-ol bbb bbg bbl bbo bbs bgb bgg bgl bgo bgs bgv blb blg bll blo bls blv bob bog bol boo bos bov bsb bsg bsl bso bss bsv bvb bvg bvl bvo bvs bvv gbg gbl gbo gbs gbv ggb ggg ggo ggs ggv glb glg gll glo gls glv gob gog gol goo gos gov gsb gsg gsl gso gss gsv gvb gvg gvl gvo gvs lbb lbg lbl lbo lbs lbv lgb lgg lgl lgo lgs lgv llb llg lll llo lls llv lob log lol loo los lov lsb lsg lsl lso lss lsv lvb lvg lvl lvs lvv ob- obb obg obl obo obs obv ogg ogl ogo ogs olb olg oll olo ols oo- oob oog ool ooo oos oov os- osb osg osl oso oss osv ov- ovb ovl ovo ovs ovv sbb sbg sbl sbo sbs sbv sgb sgg sgl sgo sgs sgv slb slg sll slo sls slv sob sog sol soo sos sov ss- ssb ssg ssl sso sss ssv svb svg svl svo svs svv vbg vbl vbo vbs vbv vgg vgl vgo vgs vl- vlb vll vlo vls vlv vob vog vol voo vos vov vsb vsg vsl vso vss vsv vvb vvg vvo vvs vvv