matrix := [
[7,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,7,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,7,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,7,0,0,0,0,0,0,0,0,0,0],
[0,7,0,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,7,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,7,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,7,0,0,0,0,0],
[0,0,0,7,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,7,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,7],
[0,2,7,7,11,2,8,7,2,2,12,2,2,5,5,3],
[5,11,7,12,4,4,11,8,2,8,4,12,4,9,9,1],
[0,0,0,0,0,0,7,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,7,0],
[0,0,0,0,0,0,0,7,0,0,0,0,0,0,0,0]
]*Z(13);