matrix := [
[0,6,0,0,0,0,0,0],
[11,0,0,0,0,0,0,0],
[0,0,0,6,0,0,0,0],
[0,0,11,0,0,0,0,0],
[0,0,0,0,0,6,0,0],
[0,0,0,0,11,0,0,0],
[1,3,6,3,13,14,11,12],
[2,1,13,7,5,9,11,6]
]*Z(17);