-ic bbb bbc bbd bbe bbi bbl bbn bcb bcc bcd bce bci bcl bcn bdb bdc bdd bde bdi bdl be- beb bec bed bee bei bel ben bi- bib bic bid bie bii bil bin blb blc bld ble bli bll bln bnb bnc bnd bne bni bnl bnn c-- cbb cbc cbd cbe cbi cbl cbn ccb ccc ccd cce cci ccl ccn cdb cdc cdd cde cdi cdl cdn ce- ceb cec ced cee cei cel cen ci- cib cic cid cie cii cil cin cl- clb clc cld cle cli cll cln cn- cnb cnc cnd cne cni cnl cnn dbb dbc dbd dbe dbi dbl dbn dcb dcc dcd dce dci dcl dcn ddb ddc ddd dde ddi ddl ddn de- deb dec ded dee dei del den di- dib dic did die dii dil din dl- dlb dlc dld dle dli dll dnb dnc dnd dne dni dnl dnn ebb ebc ebd ebe ebi ebl ebn ec- ecb ecc ecd ece eci ecl ecn ed- edb edc edd ede edi edl edn eeb eec eed eee eel een eib eic eid eie eii eil ein elb elc eld ele eli ell eln en- enb enc end ene eni enl enn i-d ibb ibc ibd ibe ibi ibl ibn icb icc icd ice ici icl icn idb idc idd ide idi idl idn ie- iec ied iee iei iel ien iib iic iid iie iii iil iin il- ilb ilc ild ile ili ill iln in- inb inc ind ine ini inl inn lbb lbc lbd lbe lbi lbl lcb lcc lcd lce lci lcl lcn ldb ldc ldd lde ldi ldl ldn leb lec led lee lei lel len lib lic lid lie lii lil lin llb llc lld lle lli lll lln lnb lnc lnd lne lni lnl lnn n-i nbb nbc nbd nbe nbi nbl nbn ncb ncc ncd nce nci ncl ncn ndb ndc ndd nde ndi ndl ndn ne- neb nec ned nee nei nel nen nib nic nid nie nii nil nin nlb nlc nld nle nli nll nln nnb nnc nne nni nnl nnn