The generator matrix

 1  1  1  1  2  2  2  2
 0  2  0  2  0  2  2  0
 0  0  2  2  2  2  0  0
 0  0  0  4  0  0  0  4
 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+84x^4+416x^6+1046x^8+416x^10+84x^12+1x^16

The gray image is a code over GF(2) with n=32, k=11 and d=8.
This code was found by Heurico 1.16 in 0.00419 seconds.