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