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  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1
 0  X 2X  0 X+6 2X X+6 2X+3  0  3 X+6 2X  0 X+3 2X+6  3 X+6 2X+3  3  X  3 2X+3  X 2X+3  6  X 2X  0  0  3  3 X+6 X+6  X X+3 2X 2X+3 2X+3 2X  3 X+3 2X 2X+6  6  X  6 2X+6  3 X+6 X+3 2X  0 X+6 2X+3  6  X 2X+6  0 X+3 2X+6  6  X 2X+6 2X 2X+3  0  3  6 2X+3 X+6 X+3  X 2X+6 2X+6  6  6  6 2X+6 X+3 X+3 X+3  0 X+6 2X  0 X+6 2X  0 X+6  6 2X+3
 0  0  3  0  6  0  3  6  3  6  6  0  3  6  6  0  0  6  6  3  3  3  3  0  6  0  3  0  3  6  3  6  3  6  0  6  0  3  6  0  6  6  0  6  3  0  0  3  3  0  3  6  0  3  3  6  6  6  3  6  0  0  0  0  6  6  0  3  0  0  3  6  3  3  0  3  6  3  0  3  6  0  6  0  0  3  0  3  3  3  6
 0  0  0  3  3  3  6  6  6  3  6  6  0  0  3  6  3  0  6  3  3  6  0  0  0  6  3  6  3  0  0  0  0  3  3  0  3  3  6  0  6  3  6  6  6  3  0  6  3  0  6  3  6  0  3  0  0  6  6  6  0  3  3  0  3  0  3  6  6  0  3  6  6  3  6  0  3  0  6  0  3  0  6  0  3  0  3  6  3  0  6

generates a code of length 91 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 177.

Homogenous weight enumerator: w(x)=1x^0+82x^177+196x^180+1458x^182+340x^183+98x^186+8x^189+2x^192+2x^270

The gray image is a code over GF(3) with n=819, k=7 and d=531.
This code was found by Heurico 1.16 in 0.472 seconds.