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