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