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