The generator matrix

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

generates a code of length 30 over Z8 who´s minimum homogenous weight is 28.

Homogenous weight enumerator: w(x)=1x^0+14x^28+96x^30+15x^32+2x^44

The gray image is a code over GF(2) with n=120, k=7 and d=56.
This code was found by Heurico 1.16 in 0.0072 seconds.