The generator matrix

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

generates a code of length 29 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 51.

Homogenous weight enumerator: w(x)=1x^0+248x^51+330x^54+972x^56+588x^57+1458x^58+1944x^59+636x^60+282x^63+60x^66+30x^69+6x^72+4x^78+2x^81

The gray image is a code over GF(3) with n=261, k=8 and d=153.
This code was found by Heurico 1.16 in 0.291 seconds.