matrix := [ [9,5,0,0,0,0,0,0,0,0,0], [0,0,6,0,0,0,0,0,0,0,0], [6,3,2,0,0,0,0,0,0,0,0], [0,0,0,0,6,0,0,0,0,0,0], [0,0,0,0,0,0,6,0,0,0,0], [0,0,0,0,0,0,0,6,0,0,0], [0,0,0,6,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,6], [1,2,2,5,7,7,4,9,4,2,8], [4,0,8,5,3,0,1,4,6,1,3], [0,0,0,0,0,6,0,0,0,0,0] ]*Z(11);