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

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+148x^141+540x^142+156x^144+4860x^148+312x^150+216x^151+48x^153+24x^159+216x^160+38x^162+2x^222

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 22 seconds.