The generator matrix

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

generates a code of length 24 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 40.

Homogenous weight enumerator: w(x)=1x^0+1086x^40+2502x^41+5482x^42+11016x^43+23196x^44+25812x^45+62550x^46+72846x^47+78840x^48+111210x^49+75294x^50+35046x^51+19008x^52+6396x^53+846x^54+198x^55+72x^56+12x^57+24x^58+2x^60+2x^63

The gray image is a code over GF(3) with n=216, k=12 and d=120.
This code was found by Heurico 1.16 in 162 seconds.