The generator matrix

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

generates a code of length 14 over Z9 who´s minimum homogenous weight is 21.

Homogenous weight enumerator: w(x)=1x^0+84x^21+326x^24+772x^27+812x^30+160x^33+28x^36+4x^39

The gray image is a code over GF(3) with n=42, k=7 and d=21.
This code was found by Heurico 1.16 in 0.0567 seconds.