The generator matrix

 1  0  0  1  1  1  1
 0  1  0  7  6  8  1
 0  0  1  5  7  8  4

generates a code of length 7 over Z9 who´s minimum homogenous weight is 10.

Homogenous weight enumerator: w(x)=1x^0+36x^10+90x^11+28x^12+144x^13+144x^14+48x^15+144x^16+90x^17+2x^18+2x^21

The gray image is a code over GF(3) with n=21, k=6 and d=10.
This code was found by Heurico 1.16 in 0.000601 seconds.