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],
[0,0,0,0,7,0,0,0,0,0,0,0],
[0,0,0,0,0,7,0,0,0,0,0,0],
[6,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,7,0,0,0],
[0,0,0,0,0,0,0,0,0,7,0,0],
[0,0,0,0,0,0,0,0,0,0,7,0],
[0,0,0,0,0,0,0,0,0,0,0,7],
[7,10,11,9,2,7,6,12,10,2,8,12],
[6,0,3,8,6,2,11,3,11,3,11,4],
[0,0,0,7,0,0,0,0,0,0,0,0]
]*Z(13);