The generator matrix

 1  0  1  1  1  1
 0  1 2X+4  8  0  0
 0  0  3  0  0  6
 0  0  0  6  0  6
 0  0  0  0  6  3

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

Homogenous weight enumerator: w(x)=1x^0+102x^6+472x^9+1944x^10+12618x^12+3888x^13+636x^15+22x^18

The gray image is a code over GF(3) with n=54, k=9 and d=18.
This code was found by Heurico 1.16 in 0.0177 seconds.