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