a-a aaa aag aan aao aas ag- aga agg agn ago ags an- ana ang ann ano ans aoa aog aon aoo aos as- asa asg asn aso ass gaa gag gan gao gas gga ggg ggn ggo ggs gna gnn gno gns goa gog gon goo gos gsa gsg gsn gso gss naa nag nan nao nas nga ngg ngn ngo ngs nna nng nnn nno nns no- noa nog non noo nos nsa nsg nsn nso nss oaa oag oan oao oas oga ogg ogn ogo ogs on- ona ong onn ono ons oo- ooa oog oon ooo oos os- osa osg osn oso oss saa sag san sao sas sga sgg sgn sgo sgs sna sng snn sno sns soa sog son soo sos ss- ssa ssg ssn sso sss