matrix := [
[0,0,5,0,0,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,5,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,5,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0],
[0,2,2,0,2,0,0,0,0,0,0,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,5,0,0,0],
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,0],
[2,0,3,4,1,5,2,5,6,6,4,2,1,1,2,5],
[1,4,0,0,4,3,5,3,0,1,3,2,5,5,0,6],
[6,3,1,6,3,6,3,5,2,3,6,2,3,6,6,5],
[4,2,1,6,3,4,5,4,2,4,0,0,1,2,3,5],
[2,6,0,2,2,4,3,0,5,4,3,2,5,1,1,1],
[2,6,2,2,5,3,6,4,0,5,6,3,3,5,1,3],
[5,1,1,3,2,6,3,2,5,4,0,1,2,4,6,0],
[6,3,2,1,4,5,1,1,4,3,1,0,0,0,1,0]
]*Z(7);