The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  3  0  0  0  0  3  6  6  0  0  3  3  3  3  3  3  3  0  6  0  6  0  6  0  3  6  3  6  6  0  0  6  3  0  3  6  6  0  6  3  3  0  0  0  3  3  3  0  0  6  6  3  3  6  6  0  6  0  3  3  0  3  6  3  0  6  0  3  0  3  6  0  3  6  6
 0  0  3  0  0  3  6  0  6  0  3  3  6  6  0  3  0  3  3  3  3  0  0  6  6  3  3  6  0  6  0  3  3  0  6  6  6  0  6  3  3  0  6  6  6  3  6  0  6  6  3  6  6  3  0  3  0  6  3  0  3  6  3  3  6  3  6  0  0  0  6  3  3  0  0  0
 0  0  0  3  0  6  6  3  0  3  3  0  0  3  6  3  3  6  6  0  0  6  6  6  6  6  3  3  0  3  6  3  6  6  3  6  3  0  0  0  3  0  0  6  0  0  0  3  3  3  6  6  6  0  3  6  0  6  6  3  6  6  3  3  0  3  0  6  6  3  3  3  0  0  3  0
 0  0  0  0  3  6  6  6  6  6  0  6  0  0  6  6  0  3  0  0  6  6  3  6  3  6  0  6  0  0  6  6  3  0  0  0  6  6  0  3  3  3  3  0  6  0  3  6  6  3  0  0  3  3  0  6  6  3  3  3  0  6  0  6  6  3  3  0  3  3  3  3  3  6  3  3

generates a code of length 76 over Z9 who´s minimum homogenous weight is 147.

Homogenous weight enumerator: w(x)=1x^0+22x^147+96x^150+486x^152+78x^153+30x^156+12x^159+2x^162+2x^228

The gray image is a code over GF(3) with n=228, k=6 and d=147.
This code was found by Heurico 1.16 in 0.1 seconds.