MeatAxe.Matrix := [
[1,0,0,0,0,0,0],
[0,4,0,0,0,0,0],
[0,0,3,0,0,0,0],
[0,0,0,5,0,0,0],
[0,0,0,0,6,0,0],
[0,0,0,0,0,1,0],
[0,0,0,0,0,0,4]
]*Z(7);