-ic c-- ccc ccd cce ccf cci cdc cdd cde cdf cdi ce- cec ced cee cef cei cfc cfd cfe cff cfi ci- cic cid cie cif cii dcc dcd dce dcf dci ddc ddd dde ddf ddi de- dec ded dee def dei dfc dfd dfe dff dfi di- dic did die dif dii ec- ecc ecd ece ecf eci ed- edc edd ede edf edi eec eed eee eef ef- efc efd efe eff efi eic eid eie eif eii fcc fcd fce fcf fci fdc fdd fde fdf fdi fec fed fee fef fei ffc ffd ffe fff ffi fic fid fie fif fii i-d i-f icc icd ice icf ici idc idd ide idf idi ie- iec ied iee ief iei ifc ifd ife iff ifi iic iid iie iif iii