The generator matrix

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

generates a code of length 71 over Z9 who´s minimum homogenous weight is 138.

Homogenous weight enumerator: w(x)=1x^0+226x^138+210x^141+164x^144+78x^147+42x^150+4x^153+2x^171+2x^192

The gray image is a code over GF(3) with n=213, k=6 and d=138.
This code was found by Heurico 1.16 in 0.112 seconds.