-ic bbb bbc bbe bbf bbi bbn bbt bcb bcc bce bcf bci bcn bct be- beb bec bee bef bei ben bet bfb bfc bfe bff bfi bfn bft bi- bib bic bie bif bii bin bit bnb bnc bne bnf bni bnn bnt btb btc bte btf bti btn btt c-- cbb cbc cbe cbf cbi cbn cbt ccb ccc cce ccf cci ccn cct ce- ceb cec cee cef cei cen cet cfb cfc cfe cff cfi cfn cft ci- cib cic cie cif cii cin cit cn- cnb cnc cne cnf cni cnn cnt ctb ctc cte ctf cti ctn ctt ebb ebc ebe ebf ebi ebn ebt ec- ecb ecc ece ecf eci ecn ect eeb eec eee eef een eet ef- efb efc efe eff efi eft eib eic eie eif eii ein eit en- enb enc ene enf eni enn ent etb etc ete etf eti etn ett fbb fbc fbe fbf fbi fbn fbt fcb fcc fce fcf fci fcn fct feb fec fee fef fei fen fet ffc ffe fff ffi ffn fft fib fic fie fif fii fin fit fnb fnc fne fnf fni fnn fnt ftb ftc fte ftf fti ftn ftt i-f ibb ibc ibe ibf ibi ibn ibt icb icc ice icf ici icn ict ie- iec iee ief iei ien iet ifb ifc ife iff ifi ifn ift iib iic iie iif iii iin iit in- inb inc ine inf ini inn int itb itc ite itf iti itn itt n-i nbb nbc nbe nbf nbi nbn nbt ncb ncc nce ncf nci ncn nct ne- neb nec nee nef nei nen net nfb nfc nfe nff nfi nfn nft nib nic nie nif nii nin nit nnb nnc nne nnf nni nnn nnt ntb ntc nte ntf nti ntn ntt tbb tbc tbe tbf tbi tbn tbt tcb tcc tce tcf tci tcn tct te- teb tec tee tef tei ten tet tfb tfc tfe tff tfi tfn tft tib tic tie tif tii tin tit tnb tnc tne tnf tni tnn tnt ttb ttc tte ttf tti ttn ttt