The generator matrix

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

generates a code of length 28 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 47.

Homogenous weight enumerator: w(x)=1x^0+510x^47+934x^48+4236x^49+7320x^50+11504x^51+24924x^52+32646x^53+51138x^54+77328x^55+79212x^56+87454x^57+78612x^58+43344x^59+19594x^60+9636x^61+2616x^62+182x^63+126x^64+72x^65+22x^66+24x^67+6x^68

The gray image is a code over GF(3) with n=252, k=12 and d=141.
This code was found by Heurico 1.16 in 163 seconds.