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