The generator matrix

 1  0  1  1  1  6  1
 0  1  3  6  5  1  4

generates a code of length 7 over Z8 who´s minimum homogenous weight is 6.

Homogenous weight enumerator: w(x)=1x^0+22x^6+16x^7+23x^8+2x^10

The gray image is a code over GF(2) with n=28, k=6 and d=12.
This code was found by Heurico 1.16 in 0.000111 seconds.