a-a aaa aag aak aao aas ag- aga agg agk ago ags aka akg akk ako aks aoa aog aok aoo aos as- asa asg ask aso ass gaa gag gak gao gas gga ggg ggo ggs gka gko gks goa gog gok goo gos gsa gsg gsk gso gss ka- kaa kag kak kao kas kga kgo kgs kkk kks koa kog kok koo kos ksa ksg ksk kso kss oaa oag oak oao oas oga ogg ogo ogs oka okg okk oko oks oo- ooa oog ook ooo oos os- osa osg osk oso oss saa sag sak sao sas sga sgg sgk sgo sgs sk- ska skg skk sko sks soa sog sok soo sos ss- ssa ssg ssk sso sss