a-a a-c aaa aac aag aah aan ac- aca acc acg ach acn ag- aga agc agg agh agn aha ahc ahg ahh ahn an- ana anc ang anh ann c-- caa cac cag cah can cca ccc ccg cch ccn cga cgc cgg cgh cgn ch- cha chc chg chh chn cn- cna cnc cng cnh cnn gaa gac gag gah gan gca gcc gcg gch gcn gga ggc ggg ggh ggn gha ghc ghg ghh ghn gna gnc gnn haa hac hag hah han hca hcc hcg hch hcn hga hgc hgg hgh hgn hha hhc hhg hhh hhn hna hnc hng hnh hnn naa nac nag nah nan nca ncc ncg nch ncn nga ngc ngg ngh ngn nha nhc nhg nhh nhn nna nnc nng nnh nnn