The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  X  1
 0  X 2X  0 X+6 2X  3 2X+3 X+6 X+6 2X  0  3 X+6 2X 2X+3  0 X+6  3 X+3 2X 2X+3 X+3 2X+3 2X+6 X+6 X+3  3 X+3  6 X+3 X+6 X+3 X+6 X+3 X+3  X 2X 2X 2X+3 2X 2X+3 2X+3 2X+6 X+6  0  0  0  3  3  6  3  0  6  0 2X+3  6 2X 2X 2X+6  3  3  0 2X+6 2X  3 2X+3  0  6 2X+3 2X+3  3 2X+6 X+3 X+6 X+3 X+6  X X+6  0
 0  0  3  0  0  0  0  6  6  3  3  3  6  3  0  3  3  6  6  6  6  6  0  3  0  3  0  3  3  6  6  6  6  3  0  0  3  0  0  3  3  3  0  0  6  0  6  3  6  6  6  3  3  6  3  6  0  6  0  3  3  0  0  6  6  0  6  0  3  3  6  6  0  6  6  3  3  0  6  0
 0  0  0  3  0  0  6  0  0  0  0  0  3  6  6  3  6  3  6  6  6  3  6  6  3  6  3  3  3  0  3  6  0  0  3  6  3  0  6  6  6  0  6  0  6  0  6  0  6  0  3  0  6  3  3  3  0  0  3  3  6  3  6  6  6  3  0  6  3  3  3  0  3  6  3  6  3  3  6  0
 0  0  0  0  6  6  0  3  6  3  6  3  6  0  6  0  3  6  6  6  3  3  0  0  6  3  0  3  3  6  3  3  3  0  6  6  0  0  3  3  6  3  0  3  0  3  3  0  0  0  3  6  0  0  0  6  6  6  3  6  6  6  3  6  0  3  0  6  6  3  0  3  0  0  0  3  6  3  6  6

generates a code of length 80 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 151.

Homogenous weight enumerator: w(x)=1x^0+54x^151+78x^152+32x^153+360x^154+192x^155+34x^156+78x^157+648x^158+60x^159+3006x^160+1338x^161+64x^162+174x^163+66x^164+36x^165+54x^166+12x^168+12x^169+42x^170+2x^171+114x^172+66x^173+30x^175+6x^178+2x^237

The gray image is a code over GF(3) with n=720, k=8 and d=453.
This code was found by Heurico 1.16 in 0.584 seconds.