c-- ccc cce cct ccu ccx ce- cec cee cet ceu cex ctc cte ctt ctu ctx cuc cue cut cuu cxc cxt cxx ec- ecc ece ect ecu ecx eec eee eet eex etc ete ett etu etx eu- euc eue eut eux ex- exc exe ext exu exx t-x tcc tce tct tcu tcx te- tec tee tet teu tex ttc tte ttt ttu ttx tuc tue tut tuu tux txe txt txu ucc uce uct ucu uec uee uet utc ute utt utu utx uuc uue uut uuu uxc uxt uxu xcx xee xet xeu xex xtc xtx xue xxx