The generator matrix

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

generates a code of length 67 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 131.

Homogenous weight enumerator: w(x)=1x^0+294x^131+546x^132+660x^134+330x^135+66x^137+132x^138+114x^140+36x^141+2x^144+4x^147+2x^156

The gray image is a code over GF(3) with n=603, k=7 and d=393.
This code was found by Heurico 1.16 in 0.236 seconds.