bbb bbd bbf bbi bbk bbn bdb bdd bdf bdi bdk bfb bfd bff bfi bfn bi- bib bid bif bii bik bin bkb bkf bkk bkn bnb bnd bnf bni bnk bnn dbb dbd dbf dbi dbk dbn ddb ddd ddf ddi ddk ddn dfb dfd dff dfi dfk dfn di- dib did dif dii dik din dkb dki dkk dnb dnd dnf dni dnk dnn fbb fbd fbf fbi fbk fbn fdb fdd fdf fdi fdk fdn ffd fff ffi ffk ffn fib fid fif fii fik fin fkb fkf fki fkk fnb fnd fnf fni fnk fnn i-d i-f ibb ibd ibf ibi ibk ibn idb idd idf idi idk idn ifb ifd iff ifi ifn iib iid iif iii iin ikb ikf iki ikk in- inb ind inf ini ink inn kbb kbd kbf kbi kbk kbn kdb kdf kdk kfd kff kfi kib kid kif kii kik kin kkb kki kkk kkn kn- knd knf kni knk knn n-i nbb nbd nbf nbi nbk nbn ndb ndd ndf ndi ndk ndn nfb nfd nff nfi nfk nfn nib nid nif nii nik nin nkf nki nkk nkn nnb nnf nni nnk nnn