ggg ggo ggr ggs ggv gko gks gog gok goo gor gos gov grg grk gro grr grs grv gsg gsk gso gsr gss gsv gvg gvk gvo gvr gvs kgo kgs kgv kkk kkr kks kkv kog kok koo kor kos krg krk kro krr krs krv ksg ksk kso ksr kss ksv kvk kvo kvr kvs kvv ogg ogo ogs okg okk oko okr oks oo- oog ook ooo oor oos oov or- org ork oro orr ors orv os- osg osk oso osr oss osv ov- ovo ovs ovv rgg rgk rgo rgr rgs rgv rkg rkk rko rks rkv rog rok roo ror ros rov rrg rrk rrr rrs rsg rsk rso rsr rss rsv rvg rvo rvr rvs rvv sgg sgk sgo sgr sgs sgv sk- skg skk sko skr sks sog sok soo sor sos sov sr- srg srk sro srr srs srv ss- ssg ssk sso ssr sss ssv svg svk svo svr svs svv vgg vgo vgr vgs vkg vog vok voo vor vos vov vrg vrk vrr vrs vsg vsk vso vsr vss vsv vvg vvo vvr vvs vvv