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  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  X  X  X  X  X  X  0  0  0  0  1  1  1  1  1  1  1  1  1  X  X  X  X  X  X  X  X  0  0  0  0  X  1  1  1  1  1  1  1  1  X  1  1
 0  X  0  X  0  X 2X 2X 2X  0  0  X  X  0  X 2X 2X 2X  0  0  X  X  0  X 2X 2X 2X  0  0  X  X  0  X 2X 2X 2X  0  0  X  X  0  X 2X 2X 2X  0  0  X  X  0  X 2X 2X 2X  0  X  X  X  0 2X 2X 2X  X  X  X  0  0  0  X  X  0  X 2X 2X 2X  0  X  X  0  X 2X 2X 2X  X  X  X  0  0  0  0  X  X  0  X 2X 2X  0 2X  0
 0  0  X 2X 2X  X  0  X 2X  0  X 2X  X 2X  0  0  X 2X  0  X 2X  X 2X  0  0  X 2X  0  X 2X  X 2X  0  0  X 2X  0  X 2X  X 2X  0  0  X 2X  0  X 2X  X 2X  0  0  X 2X  X 2X  X  0 2X  0  X 2X  0  X 2X  X  0  X 2X  X 2X  0  0  X 2X  X 2X  X 2X  0  0  X 2X  0  X 2X  X  0  0  X 2X  X 2X  0  0  X  0 2X  0

generates a code of length 99 over Z3[X]/(X^2) who´s minimum homogenous weight is 198.

Homogenous weight enumerator: w(x)=1x^0+8x^198+54x^200+16x^201+2x^219

The gray image is a linear code over GF(3) with n=297, k=4 and d=198.
This code was found by Heurico 1.16 in 0.129 seconds.