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