The generator matrix

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

generates a code of length 28 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 51.

Homogenous weight enumerator: w(x)=1x^0+122x^51+312x^52+660x^53+868x^54+564x^55+1128x^56+1262x^57+684x^58+630x^59+236x^60+30x^61+6x^62+10x^63+12x^64+6x^65+10x^66+18x^67+2x^69

The gray image is a code over GF(3) with n=252, k=8 and d=153.
This code was found by Heurico 1.16 in 0.0387 seconds.