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

generates a code of length 74 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 141.

Homogenous weight enumerator: w(x)=1x^0+340x^141+792x^144+972x^146+1080x^147+1944x^149+892x^150+198x^153+96x^156+136x^159+78x^162+30x^165+2x^216

The gray image is a code over GF(3) with n=666, k=8 and d=423.
This code was found by Heurico 1.16 in 0.45 seconds.