-ey a-a a-c aaa aac aad aae aak aay ac- aca acc acd ace ack acy ad- ada adc add ade adk ady aea aec aed aee aek aey aka akc akd ake akk ay- aya ayc ayd aye ayk c-- caa cac cad cae cak cay cca ccc ccd cce cck cda cdc cdd cde cdk cdy ce- cea cec ced cee cek cey cka ckc ckd cky cya cyc cyd cye cyk daa dac dad dae dak day dca dcc dcd dce dck dda ddc ddd dde ddk ddy de- dea dec ded dee dek dey dka dkc dke dkk dy- dya dyc dyd dye dyk dyy eaa eac ead eae eak ec- eca ecc ecd ece eck ed- eda edc edd ede edk edy eea eec eed eee eek eey eka ekc ekd eke eky eya eyc eyd eye ka- kaa kac kad kae kak kay kca kcc kcd kce kck kda kdc kde kdk kdy ke- kea kec ked kee kek key kkc kke kkk kky kya kyc kyd kye yaa yac yad yae yak yay yca ycc ycd yce ycy yda yde ydy yea yec yed yee yek yey yka ykk yyc yye yyy