The generator matrix

 1  0  1  1  1  1  1  0  1  3  1  1
 0  1  1  8  7  0  8  1  3  3  4  2
 0  0  6  0  3  3  6  6  3  6  3  6

generates a code of length 12 over Z9 who´s minimum homogenous weight is 21.

Homogenous weight enumerator: w(x)=1x^0+24x^21+90x^22+30x^24+36x^25+24x^27+36x^28+2x^36

The gray image is a code over GF(3) with n=36, k=5 and d=21.
This code was found by Heurico 1.16 in 0.000517 seconds.