matrix := [
[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],
[0,0,0,7,0,0,0,0,0,0,0,0,0],
[0,0,7,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,7,0,0,0,0,0,0,0],
[0,0,0,0,7,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,7,0,0,0,0],
[0,0,0,0,0,0,0,0,0,7,0,0,0],
[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],
[1,9,4,12,5,2,9,8,9,12,4,9,12],
[8,9,11,11,1,7,10,5,5,3,4,8,10],
[9,7,4,6,4,2,7,5,1,1,3,4,8]
]*Z(13);