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