-ic bbb bbc bbe bbf bbi bbn bcb bcc bce bcf bci bcn be- beb bec bee bef bei ben bfb bfc bfe bff bfi bfn bi- bib bic bie bif bii bin bnb bnc bne bnf bni bnn c-- cbb cbc cbe cbf cbi cbn ccb ccc cce ccf cci ccn ce- ceb cec cee cef cei cen cfb cfc cfe cff cfi cfn ci- cib cic cie cif cii cin cn- cnb cnc cne cnf cni cnn ebb ebc ebe ebf ebi ebn ec- ecb ecc ece ecf eci ecn eeb eec eee eef een ef- efb efc efe eff efi eib eic eie eif eii ein en- enb enc ene enf eni enn fbb fbc fbe fbf fbi fbn fcb fcc fce fcf fci fcn feb fec fee fef fei fen ffc ffe fff ffi ffn fib fic fie fif fii fin fnb fnc fne fnf fni fnn i-f ibb ibc ibe ibf ibi ibn icb icc ice icf ici icn ie- iec iee ief iei ien ifb ifc ife iff ifi ifn iib iic iie iif iii iin in- inb inc ine inf ini inn n-i nbb nbc nbe nbf nbi nbn ncb ncc nce ncf nci ncn ne- neb nec nee nef nei nen nfb nfc nfe nff nfi nfn nib nic nie nif nii nin nnb nnc nne nnf nni nnn