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

generates a code of length 88 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 171.

Homogenous weight enumerator: w(x)=1x^0+14x^171+54x^172+236x^174+216x^175+972x^176+456x^177+216x^178+16x^180+4x^183+2x^261

The gray image is a code over GF(3) with n=792, k=7 and d=513.
This code was found by Heurico 1.16 in 0.419 seconds.