-ey a-a a-c aaa aac aae aag aay ac- aca acc ace acg acy aea aec aee aeg aey ag- aga agc age agg agy ay- aya ayc aye c-- caa cac cae cag cay cca ccc cce ccg ce- cea cec cee ceg cey cga cgc cge cgg cgy cya cyc cye cyg eaa eac eae eag ec- eca ecc ece ecg eea eec eee eeg eey ega egc ege egg egy eya eyc eye gaa gac gae gag gay gca gcc gce gcg ge- gea gec gee geg gey gga ggc ggg gy- gya gye yaa yac yae yag yay yca ycc yce ycy yea yec yee yeg yey yga ygc yyc yye yyg yyy