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