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  0  6  1  X  1  1  1  X  1  1  X  0  1
 0  X  0  0 2X X+6 2X+6  X 2X X+6  6  0 X+6 2X+6  3 2X+6 2X X+3  3  6  0 2X+6 X+6 2X+3 X+6 X+3 2X+3 2X+3  X 2X  3 X+6  3  3  0  0 X+6 2X+6  3  0 2X+6  6  X X+3 X+6  X X+6 X+3 2X X+6  0  X  X 2X+3
 0  0  X 2X  0 2X+3 X+3  X 2X+3 2X+6  X  6 X+3 X+3 2X  0 2X  3 X+6 2X+6  6 2X+6 2X+3 X+3  0  X  6 X+3  3 2X  X 2X+3  3 2X+3  6 2X+6 X+3  X  X  3 2X+6  X X+6 2X  3 2X X+3  X 2X X+6 X+6  X  3 X+6
 0  0  0  3  0  0  6  0  0  3  6  3  6  3  6  3  3  6  6  0  0  0  0  6  6  6  6  0  3  3  6  3  3  6  6  0  3  0  3  6  3  6  6  6  6  0  6  0  6  0  3  0  3  6
 0  0  0  0  3  6  0  3  6  0  6  3  0  0  0  3  6  0  0  0  3  3  3  3  3  3  0  6  6  3  3  3  6  3  6  3  6  0  0  3  0  0  6  0  3  0  3  6  3  0  3  6  0  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+682x^99+1086x^102+810x^104+1764x^105+972x^106+3240x^107+2546x^108+1944x^109+3240x^110+1908x^111+744x^114+466x^117+210x^120+48x^123+20x^126+2x^144

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 99.5 seconds.