-ey a-a a-c aaa aac aad aae aay ac- aca acc acd ace acy ad- ada adc add ade ady aea aec aed aee aey ay- aya ayc ayd aye c-- caa cac cad cae cay cca ccc ccd cce cda cdc cdd cde cdy ce- cea cec ced cee cey cya cyc cyd cye daa dac dad dae day dca dcc dcd dce dda ddc ddd dde ddy de- dea dec ded dee dey dy- dya dyc dyd dye dyy eaa eac ead eae ec- eca ecc ecd ece ed- eda edc edd ede edy eea eec eed eee eey eya eyc eyd eye yaa yac yad yae yay yca ycc ycd yce ycy yda yde ydy yea yec yed yee yey yyc yye yyy