a-a a-t aaa aag aan aao aas aat ag- aga agg agn ago ags agt an- ana ang ann ano ans ant aoa aog aon aoo aos aot as- asa asg asn aso ass ast at- ata atg atn ato ats att gaa gag gan gao gas gat gga ggg ggn ggo ggs ggt gna gnn gno gns gnt goa gog gon goo gos got gsa gsg gsn gso gss gst gta gtg gtn gto gts gtt naa nag nan nao nas nat nga ngg ngn ngo ngs ngt nna nng nnn nno nns nnt no- noa nog non noo nos not nsa nsg nsn nso nss nst nta ntg ntn nto nts ntt oaa oag oan oao oas oat oga ogg ogn ogo ogs ogt on- ona ong onn ono ons ont oo- ooa oog oon ooo oos oot os- osa osg osn oso oss ost ot- ota otg otn oto ots ott saa sag san sao sas sat sga sgg sgn sgo sgs sgt sna sng snn sno sns snt soa sog son soo sos sot ss- ssa ssg ssn sso sss sst sta stg stn sto sts stt taa tag tan tao tas tat tga tgg tgn tgo tgs tgt tna tng tnn tno tns tnt to- toa tog ton too tos tot tsa tsg tsn tso tss tst tta ttg ttn tto tts ttt