The generator matrix

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

generates a code of length 9 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+306x^12+1458x^14+1692x^15+7290x^16+5832x^17+19788x^18+14580x^19+5832x^20+2232x^21+36x^24+2x^27

The gray image is a code over GF(3) with n=81, k=10 and d=36.
This code was found by Heurico 1.16 in 8.84 seconds.