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