The generator matrix

 1  0  1  1  1  1  1 X+6  1  1  1 2X  1  1 X+6  1  1  0  1  1  1  1  1 2X  1  1 2X+3  1  1  1 X+3  1  1  1  1  0  1  1  3  1  1  1  0  1  3  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+6  3 2X  X
 0  1 2X+7  8 X+6 X+1 X+5  1 2X  7 2X+8  1 2X+7 X+6  1  8  0  1 2X X+1 X+5  7 2X+8  1  3 2X+4  1  2 X+4 X+3  1 X+5 2X+2 2X  7  1 2X+3  4  1 X+2 2X  7  1 X+5  1 2X+3  4 X+2  0 X+6 2X+3  0  3  3  3 X+6 X+3 X+3 2X+7 2X+4  4 X+1 2X+7 2X+1 2X+4 X+1 X+4 X+4 X+2  8 2X+8  5  1  1  1  1
 0  0  6  0  6  3  3  0  0  3  6  6  0  3  6  6  3  3  6  0  3  6  0  3  6  3  0  3  6  0  3  0  3  0  0  3  3  3  6  0  6  6  0  6  6  3  0  6  0  6  6  3  3  6  0  3  0  6  6  0  3  6  3  6  0  0  3  3  6  0  6  0  0  3  3  0
 0  0  0  3  3  6  3  3  3  0  6  0  0  3  3  3  0  3  0  6  6  6  6  0  0  0  0  3  6  3  3  6  6  0  6  0  0  6  3  3  3  0  3  3  0  3  0  6  3  0  6  3  6  3  6  0  0  6  6  3  3  0  6  3  6  0  0  3  0  6  3  0  0  6  3  6

generates a code of length 76 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 147.

Homogenous weight enumerator: w(x)=1x^0+746x^147+648x^148+1662x^150+504x^151+842x^153+324x^154+1124x^156+432x^157+228x^159+36x^160+8x^162+4x^180+2x^192

The gray image is a code over GF(3) with n=684, k=8 and d=441.
This code was found by Heurico 1.16 in 10.9 seconds.