The generator matrix

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

generates a code of length 28 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 45.

Homogenous weight enumerator: w(x)=1x^0+52x^45+112x^48+54x^50+108x^51+324x^53+102x^54+5022x^56+70x^57+432x^59+96x^60+94x^63+46x^66+30x^69+12x^72+6x^75

The gray image is a code over GF(3) with n=252, k=8 and d=135.
This code was found by Heurico 1.16 in 0.129 seconds.