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