matrix := [
[0,0,7,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,7,0,0,0,0,0,0,0,0],
[0,0,0,0,0,7,0,0,0,0,0,0,0],
[0,6,7,7,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,7,0,0,0,0,0,0],
[0,1,11,5,1,5,7,0,0,0,0,0,0],
[0,0,0,0,0,0,0,7,0,0,0,0,0],
[0,0,0,0,0,0,0,0,7,0,0,0,0],
[0,0,0,0,0,0,0,0,0,7,0,0,0],
[0,0,0,0,0,0,0,0,0,0,7,0,0],
[0,0,0,0,0,0,0,0,0,0,0,7,0],
[0,0,0,0,0,0,0,0,0,0,0,0,7],
[7,5,10,9,8,5,9,6,11,6,8,5,1]
]*Z(13);