-ic bbb bbc bbe bbi bbl bbn bcb bcc bce bci bcl bcn be- beb bec bee bei bel ben bi- bib bic bie bii bil bin blb blc ble bli bll bln bnb bnc bne bni bnl bnn c-- cbb cbc cbe cbi cbl cbn ccb ccc cce cci ccl ccn ce- ceb cec cee cei cel cen ci- cib cic cie cii cil cin cl- clb clc cle cli cll cln cn- cnb cnc cne cni cnl cnn ebb ebc ebe ebi ebl ebn ec- ecb ecc ece eci ecl ecn eeb eec eee eel een eib eic eie eii eil ein elb elc ele eli ell eln en- enb enc ene eni enl enn ibb ibc ibe ibi ibl ibn icb icc ice ici icl icn ie- iec iee iei iel ien iib iic iie iii iil iin il- ilb ilc ile ili ill iln in- inb inc ine ini inl inn lbb lbc lbe lbi lbl lcb lcc lce lci lcl lcn leb lec lee lei lel len lib lic lie lii lil lin llb llc lle lli lll lln lnb lnc lne lni lnl lnn n-i nbb nbc nbe nbi nbl nbn ncb ncc nce nci ncl ncn ne- neb nec nee nei nel nen nib nic nie nii nil nin nlb nlc nle nli nll nln nnb nnc nne nni nnl nnn