a-a a-c aaa aac aag aam aao aas ac- aca acc acg acm aco acs ag- aga agc agg agm ago ags ama amc amg amm amo ams aoa aoc aog aom aoo aos as- asa asc asg asm aso ass c-- caa cac cag cam cao cas cca ccc ccg ccm cco ccs cga cgc cgg cgm cgo cgs cma cmc cmg cmm cmo cms co- coa coc cog com coo cos csa csc csg csm cso css gaa gac gag gam gao gas gca gcc gcg gcm gco gcs gga ggc ggg ggm ggo ggs gma gmc gmg gmm gmo gms goa goc gog gom goo gos gsa gsc gsg gsm gso gss m-o maa mac mag mam mao mas mc- mca mcc mcg mcm mco mcs mga mgc mgm mgo mgs mma mmc mmg mmm mmo mms moa moc mog mom moo mos msa msc msg msm mso mss oaa oac oag oam oao oas oc- oca occ ocg ocm oco ocs oga ogc ogg ogo ogs om- oma omc omg omm omo oms oo- ooa ooc oog oom ooo oos os- osa osc osg osm oso oss saa sac sag sam sao sas sca scc scg scm sco scs sga sgc sgg sgm sgo sgs sma smc smg smm smo sms soa soc sog som soo sos ss- ssa ssc ssg ssm sso sss