a-a aaa aag aan aao aas aax ag- aga agg agn ago ags agx an- ana ang ann ano ans anx aoa aog aon aoo aos aox as- asa asg asn aso ass asx ax- axa axn axo axs axx gaa gag gan gao gas gga ggg ggn ggo ggs gna gnn gno gns goa gog gon goo gos gox gsa gsg gsn gso gss gsx gxa gxs naa nag nan nao nas nax nga ngg ngn ngo ngs nna nng nnn nno nns no- noa nog non noo nos nox nsa nsg nsn nso nss nsx oaa oag oan oao oas oax oga ogg ogn ogo ogs ogx on- ona ong onn ono ons onx oo- ooa oog oon ooo oos oox os- osa osg osn oso oss osx ox- oxa oxn oxo oxx saa sag san sao sas sax sga sgg sgn sgo sgs sgx sna sng snn sno sns soa sog son soo sos sox ss- ssa ssg ssn sso sss ssx sxn sxs xaa xag xan xas xna xno xns xoa xog xon xoo xos xox xsa xss xxo xxx