-ey a-a a-c aaa aac aae aap aay ac- aca acc ace acp acy aea aec aee aep aey ap- apa apc ape app apy ay- aya ayc aye ayp c-- caa cac cae cap cay cca ccc cce ccp ce- cea cec cee cep cey cpa cpc cpe cpp cya cyc cye cyp eaa eac eae eap ec- eca ecc ece eea eec eee eep eey ep- epa epc epe epp eya eyc eye eyp p-p paa pac pae pap pay pca pcc pce pcp pea pec pee pep pey ppa ppc ppe ppp py- pya pyc pye yaa yac yae yap yay yca ycc yce ycp ycy yea yec yee yep yey ypa yyc yye yyy