matrix := [ [0,0,5,0,0,0,0,0,0,0,0,0,0,0], [0,2,2,0,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,0,5,0,0,0,0,0,0,0,0], [0,0,0,0,0,0,5,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,5,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,5,0,0,0], [0,0,0,0,0,0,0,0,0,0,0,0,5,0], [0,0,0,0,0,0,0,0,0,0,0,0,0,5], [3,6,4,2,6,6,5,1,3,6,5,5,1,3], [2,2,3,3,3,3,5,6,2,5,1,5,1,2], [5,3,5,0,0,2,0,0,0,0,5,0,0,0], [1,0,5,4,2,1,6,1,3,4,6,5,0,2], [0,4,4,3,3,1,3,4,5,5,6,6,4,0], [1,3,0,1,3,2,2,5,1,5,3,1,4,6] ]*Z(7);