matrix := [
[0,6,0,0,0,0,0,0,0,0,0,0],
[0,0,7,0,0,0,0,0,0,0,0,0],
[6,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,7,0,0,0,0,0,0,0],
[0,0,0,0,0,0,7,0,0,0,0,0],
[0,0,0,0,0,0,0,7,0,0,0,0],
[0,0,0,7,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,7,0],
[0,0,0,0,0,0,0,0,0,0,0,7],
[0,0,0,0,0,0,0,0,0,8,0,0],
[0,0,0,0,0,7,0,0,0,0,0,0],
[7,2,5,9,3,3,1,1,2,10,9,5]
]*Z(13);