The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  3  0  1  1  1  1  1  1  3  1  6  1  1  1  1  1  1  1  1  6
 0  1  0  0  3  7  7  1  5  8  8  1  3  5  3  7  6  1  8  1  5  1  3  6  1  6  3  5  0  8  1
 0  0  1  1  5  6  2  4  7  2  0  3  1  2  6  5  7  0  0  7  4  5  5  6  1  1  3  4  1  4  8
 0  0  0  6  6  0  6  6  3  3  6  3  3  0  3  3  0  3  0  0  6  6  0  6  0  3  6  3  3  0  3

generates a code of length 31 over Z9 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+180x^56+212x^57+180x^58+216x^59+144x^60+144x^61+246x^62+132x^63+150x^65+158x^66+144x^67+126x^68+66x^69+18x^70+42x^71+14x^72+12x^74+2x^84

The gray image is a code over GF(3) with n=93, k=7 and d=56.
This code was found by Heurico 1.16 in 0.046 seconds.