The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+102x^99+252x^100+192x^101+568x^102+1086x^103+420x^104+1868x^105+1860x^106+1260x^107+3236x^108+2706x^109+1200x^110+2362x^111+1560x^112+276x^113+238x^114+300x^115+36x^116+84x^117+12x^118+12x^119+16x^120+6x^122+14x^123+4x^126+4x^129+4x^132+2x^135+2x^138

The gray image is a code over GF(3) with n=486, k=9 and d=297.
This code was found by Heurico 1.16 in 0.939 seconds.