-ey a-a a-c aaa aac aae aak aay ac- aca acc ace ack acy aea aec aee aek aey aka akc ake akk ay- aya ayc aye ayk c-- caa cac cae cak cay cca ccc cce cck ce- cea cec cee cek cey cka ckc cky cya cyc cye cyk eaa eac eae eak ec- eca ecc ece eck eea eec eee eek eey eka ekc eke eky eya eyc eye ka- kaa kac kae kak kay kca kcc kce kck ke- kea kec kee kek key kkc kke kkk kky kya kyc kye yaa yac yae yak yay yca ycc yce ycy yea yec yee yek yey yka ykk yyc yye yyy