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