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