matrix := [
[0,15,0,0,0,0,0,0,0],
[15,0,0,0,0,0,0,0,0],
[0,0,0,15,0,0,0,0,0],
[0,0,15,0,0,0,0,0,0],
[0,0,0,0,0,15,0,0,0],
[0,0,0,0,15,0,0,0,0],
[24,5,23,6,20,9,15,0,0],
[0,0,0,0,0,0,0,0,15],
[0,0,0,0,0,0,0,15,0]
]*Z(29);