The generator matrix

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

generates a code of length 10 over Z9[X]/(X^2+3,3X) who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+158x^18+48x^19+180x^20+314x^21+24x^22+2x^24+2x^27

The gray image is a code over GF(3) with n=90, k=6 and d=54.
This code was found by Heurico 1.16 in 0.00038 seconds.