The generator matrix

 1  0  0  1  1  1  1
 0  1  0 2X+7  X  1  0
 0  0  1 2X+5 X+8  1  0
 0  0  0  6  3  0  3

generates a code of length 7 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 8.

Homogenous weight enumerator: w(x)=1x^0+120x^8+32x^9+972x^10+720x^11+5906x^12+3888x^13+30762x^14+11742x^15+3888x^16+960x^17+54x^18+4x^21

The gray image is a code over GF(3) with n=63, k=10 and d=24.
This code was found by Heurico 1.16 in 0.188 seconds.