a-a a-c aaa aac aag aan aas ac- aca acc acg acn acs ag- aga agc agg agn ags an- ana anc ang ann ans as- asa asc asg asn ass c-- caa cac cag can cas cca ccc ccg ccn ccs cga cgc cgg cgn cgs cn- cna cnc cng cnn cns csa csc csg csn css gaa gac gag gan gas gca gcc gcg gcn gcs gga ggc ggg ggn ggs gna gnc gnn gns gsa gsc gsg gsn gss naa nac nag nan nas nca ncc ncg ncn ncs nga ngc ngg ngn ngs nna nnc nng nnn nns nsa nsc nsg nsn nss saa sac sag san sas sca scc scg scn scs sga sgc sgg sgn sgs sna snc sng snn sns ss- ssa ssc ssg ssn sss