The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+73x^4+32x^5+460x^6+736x^7+1491x^8+736x^9+464x^10+32x^11+67x^12+4x^14

The gray image is a code over GF(2) with n=32, k=12 and d=8.
This code was found by Heurico 1.16 in 0.0116 seconds.