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