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

generates a code of length 76 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 150.

Homogenous weight enumerator: w(x)=1x^0+114x^150+486x^152+96x^153+18x^156+6x^159+2x^162+6x^177

The gray image is a code over GF(3) with n=684, k=6 and d=450.
This code was found by Heurico 1.16 in 0.282 seconds.