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

generates a code of length 54 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 99.

Homogenous weight enumerator: w(x)=1x^0+80x^99+90x^101+300x^102+72x^103+126x^104+580x^105+594x^106+84x^107+2272x^108+1188x^109+36x^110+628x^111+90x^112+60x^113+88x^114+60x^116+120x^117+18x^119+44x^120+12x^122+12x^123+2x^126+2x^132+2x^150

The gray image is a code over GF(3) with n=486, k=8 and d=297.
This code was found by Heurico 1.16 in 0.264 seconds.