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