-ey bbb bbe bbf bbi bbn bby be- beb bee bef bei ben bey bfb bfe bff bfi bfn bfy bi- bib bie bif bii bin biy bnb bne bnf bni bnn by- bye byf byi byn ebb ebe ebf ebi ebn eby eeb eee eef een eey ef- efb efe eff efi eib eie eif eii ein en- enb ene enf eni enn eny eye eyn fbb fbe fbf fbi fbn feb fee fef fei fen fey ffe fff ffi ffn ffy fib fie fif fii fin fnb fne fnf fni fnn fy- fyb fye fyi fyn i-f ibb ibe ibf ibi ibn iby ie- iee ief iei ien iey ifb ife iff ifi ifn ify iib iie iif iii iin in- inb ine inf ini inn iny iye iyy n-i nbb nbe nbf nbi nbn ne- neb nee nef nei nen ney nfb nfe nff nfi nfn nib nie nif nii nin nnb nne nnf nni nnn nye nyf nyn nyy ybe ybf ybi yby yeb yee yef yei yen yey yfe yff yie yif yii yin yne ynn yny yyb yye yyf yyy