The generator matrix

 1  0  1  1  1  1  1
 0  1 2X+7  8 X+6  0 X+6
 0  0  6  0  6  3  6
 0  0  0  3  6  3  3

generates a code of length 7 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 9.

Homogenous weight enumerator: w(x)=1x^0+32x^9+108x^10+722x^12+432x^13+3402x^14+1374x^15+432x^16+54x^18+4x^21

The gray image is a code over GF(3) with n=63, k=8 and d=27.
This code was found by Heurico 1.16 in 0.00477 seconds.