The generator matrix

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

generates a code of length 29 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 50.

Homogenous weight enumerator: w(x)=1x^0+300x^50+228x^51+90x^52+804x^53+958x^54+540x^55+2322x^56+2448x^57+3024x^58+3924x^59+2442x^60+720x^61+960x^62+290x^63+360x^65+180x^66+78x^68+12x^69+2x^72

The gray image is a code over GF(3) with n=261, k=9 and d=150.
This code was found by Heurico 1.16 in 0.839 seconds.