-ey a-a a-c aaa aac aae aak aap aay ac- aca acc ace ack acp acy aea aec aee aek aep aey aka akc ake akk akp ap- apa apc ape apk app apy ay- aya ayc aye ayk ayp c-- caa cac cae cak cap cay cca ccc cce cck ccp ce- cea cec cee cek cep cey cka ckc cky cpa cpc cpe cpk cpp cya cyc cye cyk cyp eaa eac eae eak eap ec- eca ecc ece eck eea eec eee eek eep eey eka ekc eke ekp eky ep- epa epc epe epp eya eyc eye eyp ka- kaa kac kae kak kap kay kca kcc kce kck kcp ke- kea kec kee kek kep key kkc kke kkk kkp kky kpa kpc kpe kpk kpp kya kyc kye kyp p-p paa pac pae pak pap pay pca pcc pce pck pcp pea pec pee pek pep pey pka pkc pke pkp pky ppa ppc ppe ppk ppp py- pya pyc pye pyk yaa yac yae yak yap yay yca ycc yce ycp ycy yea yec yee yek yep yey yka ykk ypa yyc yye yyy