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

generates a code of length 56 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 99.

Homogenous weight enumerator: w(x)=1x^0+58x^99+30x^100+6x^101+350x^102+108x^103+66x^104+440x^105+378x^106+192x^107+1520x^108+1188x^109+342x^110+4406x^111+2202x^112+474x^113+4430x^114+1608x^115+294x^116+636x^117+186x^118+84x^119+324x^120+120x^121+120x^123+12x^124+46x^126+24x^129+10x^132+14x^135+6x^138+4x^141+2x^144+2x^147

The gray image is a code over GF(3) with n=504, k=9 and d=297.
This code was found by Heurico 1.16 in 1.96 seconds.