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

generates a code of length 76 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 145.

Homogenous weight enumerator: w(x)=1x^0+198x^145+336x^146+70x^147+408x^148+528x^149+570x^150+822x^151+792x^152+996x^153+750x^154+594x^155+22x^156+42x^157+48x^158+18x^159+120x^160+48x^161+2x^162+54x^163+72x^164+12x^165+18x^166+6x^168+12x^169+6x^170+6x^172+6x^173+2x^174+2x^210

The gray image is a code over GF(3) with n=684, k=8 and d=435.
This code was found by Heurico 1.16 in 22.1 seconds.