-ey a-a a-b aaa aab aae aas aay ab- aba abb abe abs aby aea aeb aee aes aey as- asa asb ase ass asy ay- aya aye ays baa bab bae bas bay bba bbb bbe bbs bby be- bea beb bee bes bey bsa bsb bse bss bsy by- bya bye bys eaa eab eae eas eba ebb ebe ebs eby eea eeb eee ees eey es- esa esb ese ess esy eya eye eys saa sab sae sas say sba sbb sbe sbs sby se- sea seb see ses sey ss- ssa ssb sse sss sy- sya syb sye sys yaa yab yae yas yay ybe ybs yby yea yeb yee yes yey ysa ysb yse yss ysy yyb yye yys yyy