-er -ey a-a a-c aaa aac aae aag aan aar aay ac- aca acc ace acg acn acr acy aea aec aee aeg aen aer aey ag- aga agc age agg agn agr agy an- ana anc ane ang ann anr any ar- ara arc are arg arn arr ary ay- aya ayc aye ayn ayr c-- caa cac cae cag can car cay cca ccc cce ccg ccn ccr ce- cea cec cee ceg cen cer cey cga cgc cge cgg cgn cgr cgy cn- cna cnc cne cng cnn cnr cny cra crc cre crg crn crr cry cya cyc cye cyg cyn cyr eaa eac eae eag ean ear ec- eca ecc ece ecg ecn ecr eea eec eee eeg een eer eey ega egc ege egg egn egr egy en- ena enc ene eng enn enr eny era erc ere erg ern err ery eya eyc eye eyn eyr gaa gac gae gag gan gar gay gca gcc gce gcg gcn gcr ge- gea gec gee geg gen ger gey gga ggc ggg ggn ggr gna gnc gne gnn gnr gra grc gre grg grn grr gry gy- gya gye gyn gyr naa nac nae nag nan nar nay nca ncc nce ncg ncn ncr ne- nea nec nee neg nen ner ney nga ngc nge ngg ngn nna nnc nne nng nnn nra nrc nre nrg nrn nrr nry nya nyc nye nyg nyn nyy ra- raa rac rae rag ran rar ray rca rcc rce rcg rcn rcr re- rea rec ree reg ren rer rey rga rgc rge rgg rgn rgr rna rnc rng rnn rnr rny rra rrc rrg rrn rrr ry- rya ryc rye ryg ryn ryr ryy yaa yac yae yag yan yar yay yca ycc yce ycy yea yec yee yeg yen yer yey yga ygc yna yne yng ynn yny yra yrc yre yrg yrn yyc yye yyg yyy