The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  X  0  X  X  0  1  X  X X^2  1  1  1  X  X X^2  X  1  1  1  1  X  X  X
 0  X 2X  0 2X^2+X 2X X^2 2X^2+X X^2+2X X^2 X^2+X X^2+2X X^2 X^2+X 2X  0  X X^2+2X 2X^2 2X^2 2X^2+X X^2+X 2X^2+2X 2X^2+2X 2X^2  X 2X^2+2X 2X^2+X 2X  X 2X^2+X 2X  X  0 X^2+X X^2+2X  X  0 X^2 X^2 X^2+X X^2+2X  X X^2+2X  0 X^2 2X^2 2X^2 2X^2+X X^2+X 2X
 0  0 X^2 X^2 2X^2 2X^2 2X^2 X^2  0 X^2  0 X^2  0 X^2  0 2X^2 2X^2 2X^2  0 X^2  0 2X^2 X^2 2X^2 2X^2 X^2  0 2X^2  0 X^2 X^2 X^2  0  0  0 2X^2 2X^2 X^2 2X^2 X^2 X^2 X^2 X^2  0 2X^2  0  0 X^2  0 2X^2 2X^2

generates a code of length 51 over Z3[X]/(X^3) who´s minimum homogenous weight is 99.

Homogenous weight enumerator: w(x)=1x^0+76x^99+114x^100+36x^101+336x^102+60x^103+18x^104+6x^105+42x^106+36x^108+4x^126

The gray image is a linear code over GF(3) with n=459, k=6 and d=297.
This code was found by Heurico 1.16 in 0.0488 seconds.