matrix := [ [Z(9)^8,0*Z(9),0*Z(9),0*Z(9),0*Z(9),0*Z(9)], [0*Z(9),0*Z(9),Z(9)^8,0*Z(9),0*Z(9),0*Z(9)], [0*Z(9),Z(9)^8,0*Z(9),0*Z(9),0*Z(9),0*Z(9)], [0*Z(9),0*Z(9),0*Z(9),0*Z(9),0*Z(9),Z(9)^8], [0*Z(9),Z(9)^1,Z(9)^5,Z(9)^8,Z(9)^8,Z(9)^4], [0*Z(9),0*Z(9),0*Z(9),Z(9)^8,0*Z(9),0*Z(9)] ];