ggg ggo ggr ggs gko gks gog gok goo gor gos grg grk gro grr grs gsg gsk gso gsr gss kgo kgs kkk kkr kks kog kok koo kor kos krg krk kro krr krs ksg ksk kso ksr kss ogg ogo ogs okg okk oko okr oks oo- oog ook ooo oor oos or- org ork oro orr ors os- osg osk oso osr oss rgg rgk rgo rgr rgs rkg rkk rko rks rog rok roo ror ros rrg rrk rrr rrs rsg rsk rso rsr rss sgg sgk sgo sgr sgs sk- skg skk sko skr sks sog sok soo sor sos sr- srg srk sro srr srs ss- ssg ssk sso ssr sss