matrix := [ [6,0,0,0,0,0,0,0,0,0,0], [0,0,6,0,0,0,0,0,0,0,0], [5,5,5,0,0,0,0,0,0,0,0], [0,0,0,0,6,0,0,0,0,0,0], [5,0,0,5,5,0,0,0,0,0,0], [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], [0,0,0,0,0,0,0,0,0,0,6], [0,0,0,0,0,0,0,6,0,0,0] ]*Z(11);