The generator matrix

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

generates a code of length 28 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+526x^48+90x^49+432x^50+2118x^51+2934x^52+2592x^53+5426x^54+11556x^55+6642x^56+7680x^57+11466x^58+3456x^59+3282x^60+198x^61+558x^63+72x^66+18x^69+2x^75

The gray image is a code over GF(3) with n=252, k=10 and d=144.
This code was found by Heurico 1.16 in 29.6 seconds.