a-a a-c aaa aac aag aam aas ac- aca acc acg acm acs ag- aga agc agg agm ags ama amc amg amm ams as- asa asc asg asm ass c-- caa cac cag cam cas cca ccc ccg ccm ccs cga cgc cgg cgm cgs cma cmc cmg cmm cms csa csc csg csm css gaa gac gag gam gas gca gcc gcg gcm gcs gga ggc ggg ggm ggs gma gmc gmg gmm gms gsa gsc gsg gsm gss maa mac mag mam mas mc- mca mcc mcg mcm mcs mga mgc mgm mgs mma mmc mmg mmm mms msa msc msg msm mss saa sac sag sam sas sca scc scg scm scs sga sgc sgg sgm sgs sma smc smg smm sms ss- ssa ssc ssg ssm sss