The generator matrix

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

generates a code of length 68 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 131.

Homogenous weight enumerator: w(x)=1x^0+384x^131+882x^132+384x^133+996x^134+820x^135+294x^136+492x^137+770x^138+222x^139+564x^140+498x^141+60x^142+144x^143+2x^144+6x^145+6x^146+8x^147+6x^148+6x^152+12x^156+2x^162+2x^165

The gray image is a code over GF(3) with n=612, k=8 and d=393.
This code was found by Heurico 1.16 in 2.02 seconds.