a-a a-c a-z aaa aac aag aak aao aaz ac- aca acc acg ack aco acz ag- aga agc agg agk ago agz aka akc akg akk ako aoa aoc aog aok aoo az- aza azg azo azz c-- caa cac cag cak cao caz cca ccc ccg cck cco ccz cga cgc cgg cgo cka ckc cko co- coa coc cog cok coo coz cz- czc czk czo gaa gac gag gak gao gaz gca gcc gcg gck gco gga ggc ggg ggo ggz gka gko goa goc gog gok goo goz gza gzo k-z ka- kaa kac kag kak kao kaz kca kcc kcg kck kga kgc kgo kkc kkk koa koc kog kok koo koz kzo oaa oac oag oak oao oc- oca occ ocg ock oco ocz oga ogc ogg ogo oka okc okg okk oko oo- ooa ooc oog ook ooo oza ozo ozz z-g zaa zac zag zak zao zaz zco zgg zka zo- zoa zoc zog zok zoo zzz