The generator matrix

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

generates a code of length 11 over Z9[X]/(X^2+6,3X) who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+30x^20+2x^21+144x^22+60x^23+4x^24+2x^30

The gray image is a code over GF(3) with n=99, k=5 and d=60.
This code was found by Heurico 1.16 in 0.000332 seconds.