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