The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  3  3  1  1  3  3  1  1  1
 0  3  0  0  0  0  0  0  0  0  0  0  0  3  6  3  3  6  3  3  3  0  0  6
 0  0  3  0  0  0  0  0  0  0  3  3  0  6  6  0  3  3  6  0  3  3  0  0
 0  0  0  3  0  0  0  0  0  0  6  3  3  3  6  6  0  6  6  3  0  3  3  6
 0  0  0  0  3  0  0  0  0  3  6  0  6  3  3  3  0  0  3  3  0  6  0  0
 0  0  0  0  0  3  0  0  0  6  6  0  6  0  0  6  6  3  3  6  0  3  3  6
 0  0  0  0  0  0  3  0  0  6  6  3  6  6  3  0  0  0  3  6  6  0  6  0
 0  0  0  0  0  0  0  3  0  6  0  6  0  0  3  3  3  3  3  6  6  3  0  0
 0  0  0  0  0  0  0  0  3  6  0  3  3  6  0  6  0  3  3  0  6  6  6  3

generates a code of length 24 over Z9 who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+180x^30+500x^33+766x^36+1284x^39+486x^40+2138x^42+3888x^43+3030x^45+11664x^46+3522x^48+15552x^49+3090x^51+7776x^52+2462x^54+1560x^57+742x^60+302x^63+96x^66+10x^69

The gray image is a code over GF(3) with n=72, k=10 and d=30.
This code was found by Heurico 1.16 in 15.7 seconds.