The generator matrix

 1  0  1  1  1  1  1  1  3  1  1 X+3  1 2X+6  1  0  1  X  1 X+3  1  1 2X+3  1  1  1 2X+6  1  1
 0  1  1  8  3  2  0 2X+1  1  7 X+3  1  4  1 2X  1 2X+8  1 X+6  1 2X+3 X+3  1 2X+2 2X X+5  1  3  0
 0  0 2X  6 X+6 X+3 2X+6  X  X 2X+3 2X+6 2X+6  3  0 2X+3 2X+3 2X+6 X+3 X+6  6  0  6 X+3  X X+3  3 2X+6 2X+3 2X

generates a code of length 29 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 53.

Homogenous weight enumerator: w(x)=1x^0+48x^53+386x^54+996x^55+240x^56+772x^57+1758x^58+480x^59+696x^60+960x^61+30x^62+136x^63+30x^66+12x^67+12x^68+2x^72+2x^75

The gray image is a code over GF(3) with n=261, k=8 and d=159.
This code was found by Heurico 1.16 in 0.0405 seconds.