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

generates a code of length 28 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 42.

Homogenous weight enumerator: w(x)=1x^0+86x^42+172x^45+202x^48+162x^50+304x^51+972x^53+276x^54+15066x^56+268x^57+1296x^59+322x^60+256x^63+172x^66+98x^69+24x^72+6x^75

The gray image is a code over GF(3) with n=252, k=9 and d=126.
This code was found by Heurico 1.16 in 1.01 seconds.