The generator matrix

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

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+66x^40+252x^42+342x^43+810x^44+778x^45+2742x^46+3240x^47+1476x^48+4938x^49+3240x^50+1040x^51+612x^52+72x^54+48x^55+20x^60+4x^63+2x^69

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 24.7 seconds.