a-a a-c a-z aaa aac aag aan aao aaz ac- aca acc acg acn aco acz ag- aga agc agg agn ago agz an- ana anc ang ann ano anz aoa aoc aog aon aoo az- aza azg azn azo azz c-- caa cac cag can cao caz cca ccc ccg ccn cco ccz cga cgc cgg cgn cgo cn- cna cnc cng cnn cno co- coa coc cog con coo coz cz- czc czo gaa gac gag gan gao gaz gca gcc gcg gcn gco gga ggc ggg ggn ggo ggz gna gnc gnn gno goa goc gog gon goo goz gza gzo naa nac nag nan nao naz nca ncc ncg ncn nco nga ngc ngg ngn ngo nna nnc nng nnn nno nnz no- noa noc nog non noo noz nzg nzo nzz oaa oac oag oan oao oc- oca occ ocg ocn oco ocz oga ogc ogg ogn ogo on- ona onc ong onn ono oo- ooa ooc oog oon ooo oza ozo ozz z-g zaa zac zag zan zao zaz zco zgg znc znn zno zo- zoa zoc zog zon zoo zzz