The generator matrix

 1  0  1  1  1  1
 0  1  1  8  0  0
 0  0  6  0  0  3
 0  0  0  3  0  3
 0  0  0  0  3  6

generates a code of length 6 over Z9 who´s minimum homogenous weight is 6.

Homogenous weight enumerator: w(x)=1x^0+48x^6+148x^9+486x^10+306x^12+972x^13+204x^15+22x^18

The gray image is a code over GF(3) with n=18, k=7 and d=6.
This code was found by Heurico 1.16 in 0.00104 seconds.