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

generates a code of length 70 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 135.

Homogenous weight enumerator: w(x)=1x^0+56x^135+450x^138+972x^140+594x^141+72x^144+36x^147+4x^153+2x^207

The gray image is a code over GF(3) with n=630, k=7 and d=405.
This code was found by Heurico 1.16 in 0.187 seconds.