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

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+474x^155+1002x^156+324x^157+930x^158+732x^159+216x^160+768x^161+642x^162+216x^163+270x^164+484x^165+54x^166+288x^167+126x^168+6x^170+2x^171+6x^173+2x^174+6x^176+4x^180+6x^182+2x^189

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 6.43 seconds.