The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1  1  1  1  X  X  1  1  1
 0  X  0  0  6  X X+6  X  6 X+6 2X+6 2X+3  0 X+6  3 2X 2X+6 2X  X 2X 2X+6 2X  0  3
 0  0  X  0 X+6 2X 2X  3 2X X+3  X 2X+3  3  0 2X+6  3  3  X 2X  0 2X 2X X+3  0
 0  0  0  X 2X+6 X+3 2X+3 X+6  6 X+6  X  3 2X+6 2X+6 2X+3 X+3  3  0  3  3 X+6 X+3 X+3  0

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+144x^40+120x^41+406x^42+480x^43+576x^44+526x^45+2568x^46+1722x^47+4646x^48+4752x^49+1680x^50+672x^51+582x^52+234x^53+254x^54+204x^55+42x^56+52x^57+18x^58+2x^60+2x^63

The gray image is a code over GF(3) with n=216, k=9 and d=120.
This code was found by Heurico 1.16 in 0.573 seconds.