The generator matrix

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

generates a code of length 18 over Z9 who´s minimum homogenous weight is 30.

Homogenous weight enumerator: w(x)=1x^0+88x^30+84x^31+144x^32+400x^33+156x^34+108x^35+254x^36+108x^37+162x^38+362x^39+114x^40+72x^41+104x^42+24x^43+6x^45

The gray image is a code over GF(3) with n=54, k=7 and d=30.
This code was found by Heurico 1.16 in 0.0137 seconds.