c-- ccc cce cct ccu ccz ce- cec cee cet ceu cez ctc cte ctt ctu ctz cuc cue cut cuu cuz cz- czc cze czt ec- ecc ece ect ecu eec eee eet etc ete ett etu etz eu- euc eue eut eze ezz tcc tce tct tcu te- tec tee tet teu tez ttc tte ttt ttu tuc tue tut tuu tuz tze tzu ucc uce uct ucu uec uee uet utc ute utt utu utz uuc uue uut uuu uzu zce zec zee zet zez zte zuc zut zuz zzt zzz