The generator matrix

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

generates a code of length 80 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 155.

Homogenous weight enumerator: w(x)=1x^0+462x^155+908x^156+714x^157+552x^158+760x^159+522x^160+408x^161+612x^162+396x^163+312x^164+432x^165+144x^166+144x^167+108x^168+54x^170+6x^175+6x^176+6x^179+8x^180+4x^183+2x^186

The gray image is a code over GF(3) with n=720, k=8 and d=465.
This code was found by Heurico 1.16 in 1.56 seconds.