ggg ggm ggo ggs gkm gko gks gmg gmm gmo gms gog gok gom goo gos gsg gsk gsm gso gss kgm kgo kgs kkk kkm kks kmg kmk kmm kmo kms kog kok kom koo kos ksg ksk ksm kso kss m-o mgk mgm mgo mgs mkg mkk mkm mko mks mmg mmk mmm mmo mms mog mok mom moo mos msg msk msm mso mss ogg ogo ogs okg okk oko oks om- omg omm omo oms oo- oog ook oom ooo oos os- osg osk osm oso oss sgg sgk sgm sgo sgs sk- skg skk skm sko sks smg smk smm smo sms sog sok som soo sos ss- ssg ssk ssm sso sss