bbb bbd bbe bbf bbi bbn bdb bdd bde bdf bdi be- beb bed bee bef bei ben bfb bfd bfe bff bfi bfn bi- bib bid bie bif bii bin bnb bnd bne bnf bni bnn dbb dbd dbe dbf dbi dbn ddb ddd dde ddf ddi ddn de- deb ded dee def dei den dfb dfd dfe dff dfi dfn di- dib did die dif dii din dnb dnd dne dnf dni dnn ebb ebd ebe ebf ebi ebn ed- edb edd ede edf edi edn eeb eed eee eef een ef- efb efd efe eff efi eib eid eie eif eii ein en- enb end ene enf eni enn fbb fbd fbe fbf fbi fbn fdb fdd fde fdf fdi fdn feb fed fee fef fei fen ffd ffe fff ffi ffn fib fid fie fif fii fin fnb fnd fne fnf fni fnn i-d i-f ibb ibd ibe ibf ibi ibn idb idd ide idf idi idn ie- ied iee ief iei ien ifb ifd ife iff ifi ifn iib iid iie iif iii iin in- inb ind ine inf ini inn n-i nbb nbd nbe nbf nbi nbn ndb ndd nde ndf ndi ndn ne- neb ned nee nef nei nen nfb nfd nfe nff nfi nfn nib nid nie nif nii nin nnb nne nnf nni nnn