a-a a-c aaa aac aae aag aao ac- aca acc ace acg aco aea aec aee aeg aeo ag- aga agc age agg ago aoa aoc aoe aog aoo c-- caa cac cae cag cao cca ccc cce ccg cco ce- cea cec cee ceg ceo cga cgc cge cgg cgo co- coa coc coe cog coo eaa eac eae eag eao ec- eca ecc ece ecg eco eea eec eee eeg eeo ega egc ege egg ego eo- eoa eoc eoe eog eoo gaa gac gae gag gao gca gcc gce gcg gco ge- gea gec gee geg geo gga ggc ggg ggo goa goc goe gog goo oaa oac oae oag oao oc- oca occ ocg oco oea oec oee oeg oeo oga ogc oge ogg ogo oo- ooa ooc oog ooo