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