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

generates a code of length 76 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 151.

Homogenous weight enumerator: w(x)=1x^0+180x^151+18x^154+12x^156+12x^159+18x^160+2x^162

The gray image is a code over GF(3) with n=684, k=5 and d=453.
This code was found by Heurico 1.16 in 0.402 seconds.