matrix := [ [0,7,0,0,0,0,0,0,0,0,0], [7,0,0,0,0,0,0,0,0,0,0], [0,0,0,0,7,0,0,0,0,0,0], [0,0,0,0,0,7,0,0,0,0,0], [0,0,7,0,0,0,0,0,0,0,0], [0,0,0,7,0,0,0,0,0,0,0], [0,0,0,0,0,0,0,7,0,0,0], [0,0,0,0,0,0,7,0,0,0,0], [0,0,0,0,0,0,0,0,0,0,7], [11,2,5,3,8,10,4,9,8,7,5], [0,0,0,0,0,0,0,0,7,0,0] ]*Z(13);