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

generates a code of length 68 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 133.

Homogenous weight enumerator: w(x)=1x^0+342x^133+396x^134+8x^135+864x^136+252x^137+8x^138+54x^139+72x^140+2x^141+144x^142+36x^143+4x^147+2x^150+2x^159

The gray image is a code over GF(3) with n=612, k=7 and d=399.
This code was found by Heurico 1.16 in 0.125 seconds.