ggg ggo ggr ggs ggv gog goo gor gos gov grg gro grr grs grv gsg gso gsr gss gsv gvg gvo gvr gvs ogg ogo ogs oo- oog ooo oor oos oov or- org oro orr ors orv os- osg oso osr oss osv ov- ovo ovs ovv rgg rgo rgr rgs rgv rog roo ror ros rov rrg rrr rrs rsg rso rsr rss rsv rvg rvo rvr rvs rvv sgg sgo sgr sgs sgv sog soo sor sos sov sr- srg sro srr srs srv ss- ssg sso ssr sss ssv svg svo svr svs svv vgg vgo vgr vgs vog voo vor vos vov vrg vrr vrs vsg vso vsr vss vsv vvg vvo vvr vvs vvv