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