a-a a-c aaa aac aag aah aao ac- aca acc acg ach aco ag- aga agc agg agh ago aha ahc ahg ahh aho aoa aoc aog aoh aoo c-- caa cac cag cah cao cca ccc ccg cch cco cga cgc cgg cgh cgo ch- cha chc chg chh cho co- coa coc cog coh coo gaa gac gag gah gao gca gcc gcg gch gco gga ggc ggg ggh ggo gha ghc ghg ghh gho goa goc gog goh goo haa hac hag hah hao hca hcc hcg hch hco hga hgc hgg hgh hgo hha hhc hhg hhh hho hoa hoc hog hoh hoo oaa oac oag oah oao oc- oca occ ocg och oco oga ogc ogg ogh ogo oha ohc ohg ohh oho oo- ooa ooc oog ooh ooo