matrix := [ [0,0,6,0,0,0,0,0,0], [5,6,6,0,0,0,0,0,0], [0,0,0,0,6,0,0,0,0], [0,0,0,0,0,6,0,0,0], [0,0,0,0,0,0,6,0,0], [1,3,2,5,2,5,9,0,0], [0,0,0,0,0,0,0,6,0], [0,0,0,0,0,0,0,0,6], [6,2,1,1,7,10,5,0,0] ]*Z(11);