matrix := [ [0,6,0,0,0,0,0,0,0], [6,0,0,0,0,0,0,0,0], [0,0,0,6,0,0,0,0,0], [0,0,6,0,0,0,0,0,0], [0,0,0,0,0,6,0,0,0], [0,0,0,0,6,0,0,0,0], [8,9,10,7,1,16,6,0,0], [0,0,0,0,0,0,0,0,6], [0,0,0,0,0,0,0,6,0] ]*Z(17);