The generator matrix

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

generates a code of length 31 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+486x^54+1122x^57+810x^58+2334x^60+3240x^61+2916x^62+3534x^63+3240x^64+1266x^66+600x^69+120x^72+6x^75+8x^81

The gray image is a code over GF(3) with n=279, k=9 and d=162.
This code was found by Heurico 1.16 in 26.6 seconds.