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  X  1  1  1  1  1  1  1  X  1  1  1  0  1  X  1  1  1
 0  X 2X  0 X+3 2X  6 2X+6 X+3 X+6 2X  0  6 X+3 2X  6 X+3  0 X+3  3 2X+3  6  6 X+3  X 2X 2X+3  0 2X+3  X  6  X 2X+6 2X+3 X+6  X  X X+3  X  X X+3 2X+3  6 2X+3  0 2X  6 2X 2X  0 2X+3  0  3 X+3  0 X+3 2X+3 2X 2X  6 2X+3 2X  6  3  3  X  0 X+3 2X+3  6  X
 0  0  6  0  0  0  0  3  3  6  6  0  0  6  6  0  6  6  0  3  6  3  6  6  0  0  3  6  3  0  3  3  6  0  3  3  6  3  6  0  0  6  6  0  6  0  6  6  0  6  0  3  6  3  6  0  0  3  3  3  3  0  3  3  3  6  0  3  0  3  0
 0  0  0  6  0  6  3  3  6  3  0  0  6  0  6  0  3  3  6  6  0  6  3  3  0  6  3  3  3  6  6  6  6  6  3  6  0  3  0  6  3  3  6  0  0  3  0  3  3  6  0  0  0  0  6  3  3  0  6  3  6  6  3  0  0  6  3  6  0  3  3
 0  0  0  0  3  3  0  6  6  0  6  6  3  6  6  3  6  3  0  6  3  0  0  3  6  6  3  6  0  6  3  0  3  0  3  3  0  0  3  3  0  3  0  3  6  6  3  0  3  3  0  0  0  3  6  3  0  0  3  6  0  6  0  3  6  6  3  3  6  3  3

generates a code of length 71 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 134.

Homogenous weight enumerator: w(x)=1x^0+174x^134+168x^135+276x^137+288x^138+1284x^140+780x^141+2250x^143+754x^144+156x^146+82x^147+48x^149+42x^150+114x^152+40x^153+54x^155+24x^156+18x^158+6x^159+2x^201

The gray image is a code over GF(3) with n=639, k=8 and d=402.
This code was found by Heurico 1.16 in 18.4 seconds.