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