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  1  1  1  1  1  1  X
 0  6  0  0  0  0  6  3  3  0  0  6  6  6  6  6  6  0  6  3  6  6  0  0  6  0  3  3  6
 0  0  6  0  0  6  3  0  3  0  6  6  3  3  0  6  0  6  3  3  0  3  6  3  6  0  6  3  0
 0  0  0  6  0  3  3  6  0  6  6  0  0  6  3  6  6  0  3  6  6  6  6  0  0  3  0  6  6
 0  0  0  0  6  3  3  3  3  3  0  3  0  0  3  3  0  3  0  0  6  3  6  0  6  6  6  3  6

generates a code of length 29 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+330x^54+1458x^58+324x^60+36x^63+36x^72+2x^81

The gray image is a code over GF(3) with n=261, k=7 and d=162.
This code was found by Heurico 1.16 in 1.14 seconds.