The generator matrix

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

generates a code of length 18 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 24.

Homogenous weight enumerator: w(x)=1x^0+28x^24+18x^25+54x^26+72x^27+96x^28+324x^29+148x^30+636x^31+1728x^32+416x^33+14064x^34+4968x^35+774x^36+27930x^37+5184x^38+544x^39+876x^40+864x^41+140x^42+120x^43+42x^45+10x^48+10x^51+2x^54

The gray image is a code over GF(3) with n=162, k=10 and d=72.
This code was found by Heurico 1.16 in 1.45 seconds.