a-a a-c a-z aaa aac aag aah aaz ac- aca acc acg ach acz ag- aga agc agg agh agz aha ahc ahg ahh ahz az- aza azg azz c-- caa cac cag cah caz cca ccc ccg cch ccz cga cgc cgg cgh ch- cha chc chg chh chz cz- czc gaa gac gag gah gaz gca gcc gcg gch gga ggc ggg ggh ggz gha ghc ghg ghh ghz gza haa hac hag hah haz hca hcc hcg hch hga hgc hgg hgh hha hhc hhg hhh hhz z-g zaa zac zag zah zaz zgg zha zhc zzz