-ey a-a a-c aaa aac aae aag aak aan aay ac- aca acc ace acg ack acn acy aea aec aee aeg aek aen aey ag- aga agc age agg agk agn agy aka akc ake akg akk akn an- ana anc ane ang ank ann any ay- aya ayc aye ayk ayn c-- caa cac cae cag cak can cay cca ccc cce ccg cck ccn ce- cea cec cee ceg cek cen cey cga cgc cge cgg cgn cgy cka ckc cky cn- cna cnc cne cng cnn cny cya cyc cye cyg cyk cyn eaa eac eae eag eak ean ec- eca ecc ece ecg eck ecn eea eec eee eeg eek een eey ega egc ege egg egn egy eka ekc eke ekg eky en- ena enc ene eng enk enn eny eya eyc eye eyn gaa gac gae gag gak gan gay gca gcc gce gcg gck gcn ge- gea gec gee geg gek gen gey gga ggc ggg ggn gka gkn gna gnc gne gnn gy- gya gye gyn ka- kaa kac kae kag kak kan kay kca kcc kce kcg kck kcn ke- kea kec kee keg kek ken key kga kgc kgy kkc kke kkk kkn kky kn- kna knc kne kng knk knn kya kyc kye kyn naa nac nae nag nak nan nay nca ncc nce ncg nck ncn ne- nea nec nee neg nek nen ney nga ngc nge ngg ngk ngn nka nkc nke nkk nkn nky nna nnc nne nng nnk nnn nya nyc nye nyg nyk nyn nyy yaa yac yae yag yak yan yay yca ycc yce ycy yea yec yee yeg yek yen yey yga ygc yka ykk ykn yna yne yng ynk ynn yny yyc yye yyg yyy