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