The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  4  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  4  4  4  4  4  4  0  4  0  0  4  0  4  4  4
 0  0  4  0  0  0  0  0  0  0  0  0  4  0  0  4  4  4  4  4  4  0  0  0  0  4  0  4  4  0  4  0
 0  0  0  4  0  0  0  0  0  0  0  0  4  4  4  4  4  4  0  4  0  0  4  4  0  0  0  0  0  0  4  4
 0  0  0  0  4  0  0  0  0  0  0  4  0  4  4  0  4  4  0  0  0  4  4  0  0  4  0  4  0  4  0  4
 0  0  0  0  0  4  0  0  0  0  0  4  0  0  4  4  4  0  4  0  0  4  0  0  4  0  0  4  4  0  4  4
 0  0  0  0  0  0  4  0  0  0  4  0  0  0  4  4  0  0  0  0  4  4  4  4  0  0  0  4  4  4  4  0
 0  0  0  0  0  0  0  4  0  0  4  0  0  4  0  0  4  0  0  4  0  0  4  4  4  4  4  4  0  0  0  4
 0  0  0  0  0  0  0  0  4  0  4  4  4  4  0  0  0  0  4  0  4  4  0  0  4  0  4  0  4  4  0  0
 0  0  0  0  0  0  0  0  0  4  4  4  4  0  0  4  4  0  0  4  4  0  0  4  4  0  4  0  0  0  4  0

generates a code of length 32 over Z8 who´s minimum homogenous weight is 24.

Homogenous weight enumerator: w(x)=1x^0+184x^24+224x^28+3278x^32+224x^36+184x^40+1x^64

The gray image is a code over GF(2) with n=128, k=12 and d=48.
This code was found by Heurico 1.16 in 9.56 seconds.