The generator matrix

 1  1  1  1  2  2
 0  2  0  2  4  0
 0  0  2  2  2  6
 0  0  0  4  0  4

generates a code of length 6 over Z8 who´s minimum homogenous weight is 4.

Homogenous weight enumerator: w(x)=1x^0+54x^4+148x^6+49x^8+4x^10

The gray image is a code over GF(2) with n=24, k=8 and d=8.
This code was found by Heurico 1.16 in 0.000259 seconds.