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

generates a code of length 51 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 98.

Homogenous weight enumerator: w(x)=1x^0+198x^98+22x^99+126x^101+1656x^102+18x^105+126x^107+2x^108+36x^110+2x^153

The gray image is a code over GF(3) with n=459, k=7 and d=294.
This code was found by Heurico 1.16 in 40.5 seconds.