bbb bbd bbf bbi bbn bdb bdd bdf bdi bfb bfd bff bfi bfn bi- bib bid bif bii bin bnb bnd bnf bni bnn dbb dbd dbf dbi dbn ddb ddd ddf ddi ddn dfb dfd dff dfi dfn di- dib did dif dii din dnb dnd dnf dni dnn fbb fbd fbf fbi fbn fdb fdd fdf fdi fdn ffd fff ffi ffn fib fid fif fii fin fnb fnd fnf fni fnn i-d i-f ibb ibd ibf ibi ibn idb idd idf idi idn ifb ifd iff ifi ifn iib iid iif iii iin in- inb ind inf ini inn n-i nbb nbd nbf nbi nbn ndb ndd ndf ndi ndn nfb nfd nff nfi nfn nib nid nif nii nin nnb nnf nni nnn