-er -ey a-a a-c aaa aac aae aag aar aay ac- aca acc ace acg acr acy aea aec aee aeg aer aey ag- aga agc age agg agr agy ar- ara arc are arg arr ary ay- aya ayc aye ayr c-- caa cac cae cag car cay cca ccc cce ccg ccr ce- cea cec cee ceg cer cey cga cgc cge cgg cgr cgy cra crc cre crg crr cry cya cyc cye cyg cyr eaa eac eae eag ear ec- eca ecc ece ecg ecr eea eec eee eeg eer eey ega egc ege egg egr egy era erc ere erg err ery eya eyc eye eyr gaa gac gae gag gar gay gca gcc gce gcg gcr ge- gea gec gee geg ger gey gga ggc ggg ggr gra grc gre grg grr gry gy- gya gye gyr ra- raa rac rae rag rar ray rca rcc rce rcg rcr re- rea rec ree reg rer rey rga rgc rge rgg rgr rra rrc rrg rrr ry- rya ryc rye ryg ryr ryy yaa yac yae yag yar yay yca ycc yce ycy yea yec yee yeg yer yey yga ygc yra yrc yre yrg yyc yye yyg yyy