-ic c-- ccc ccd cce cci cct ccx cdc cdd cde cdi cdt cdx ce- cec ced cee cei cet cex ci- cic cid cie cii cit cix ctc ctd cte cti ctt ctx cxc cxi cxt cxx dcc dcd dce dci dct dcx ddc ddd dde ddi ddt ddx de- dec ded dee dei det dex di- dic did die dii dit dix dtc dtd dte dti dtt dtx dxc dxd dxi dxt dxx ec- ecc ecd ece eci ect ecx ed- edc edd ede edi edt edx eec eed eee eet eex eic eid eie eii eit eix etc etd ete eti ett etx ex- exc exd exe exi ext exx i-d icc icd ice ici ict idc idd ide idi idt idx ie- iec ied iee iei iet iex iic iid iie iii iit iix itc itd ite iti itt itx ixc ixe ixi t-x tcc tcd tce tci tct tcx tdc tdd tde tdi tdt tdx te- tec ted tee tei tet tex tic tid tie tii tit tix ttc ttd tte tti ttt ttx txe txi txt xcd xci xcx xdc xde xdi xdt xed xee xet xex xic xie xii xit xix xtc xti xtx xxi xxx