The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+592x^48+1092x^49+2430x^50+4144x^51+8766x^52+9444x^53+19384x^54+22632x^55+26856x^56+33186x^57+23886x^58+13266x^59+7338x^60+3222x^61+438x^62+208x^63+174x^64+54x^65+26x^66+6x^67+2x^69

The gray image is a code over GF(3) with n=252, k=11 and d=144.
This code was found by Heurico 1.16 in 64.6 seconds.