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