The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+102x^30+66x^31+144x^32+380x^33+168x^34+108x^35+276x^36+126x^37+162x^38+326x^39+114x^40+72x^41+124x^42+12x^43+2x^45+4x^48

The gray image is a code over GF(3) with n=54, k=7 and d=30.
This code was found by Heurico 1.13 in -3.24e-008 seconds.