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