The generator matrix

 1  0  0  1  1  1  6  2
 0  1  0  0  1  3  1  4
 0  0  1  1  1  0  1  0
 0  0  0  2  0  6  6  2
 0  0  0  0  4  0  0  4
 0  0  0  0  0  4  0  4
 0  0  0  0  0  0  4  4

generates a code of length 8 over Z8 who´s minimum homogenous weight is 4.

Homogenous weight enumerator: w(x)=1x^0+236x^4+128x^5+3136x^6+896x^7+7590x^8+896x^9+3136x^10+128x^11+236x^12+1x^16

The gray image is a code over GF(2) with n=32, k=14 and d=8.
This code was found by Heurico 1.16 in 1.72 seconds.