The generator matrix

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

generates a code of length 76 over Z3[X]/(X^2) who´s minimum homogenous weight is 148.

Homogenous weight enumerator: w(x)=1x^0+198x^148+114x^150+126x^151+96x^153+18x^156+126x^157+6x^159+36x^160+2x^162+6x^177

The gray image is a linear code over GF(3) with n=228, k=6 and d=148.
This code was found by Heurico 1.16 in 36.2 seconds.