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