The generator matrix

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

generates a code of length 56 over Z9 who´s minimum homogenous weight is 108.

Homogenous weight enumerator: w(x)=1x^0+182x^108+354x^111+66x^114+60x^117+24x^120+24x^123+18x^129

The gray image is a code over GF(3) with n=168, k=6 and d=108.
This code was found by Heurico 1.16 in 0.0224 seconds.