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
 0  2  0  2  0  0  6  6  0  0  2  2  4  2  4  2  0  4  6  6  4  2  4  6  4  4  4  6  6  0
 0  0  2  2  0  6  6  0  4  6  6  4  4  2  2  4  4  6  6  4  0  6  2  4  4  0  6  2  0  0
 0  0  0  4  4  4  0  4  4  0  4  0  0  0  4  4  0  4  4  4  4  0  0  0  4  0  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+31x^28+192x^30+31x^32+1x^60

The gray image is a code over GF(2) with n=120, k=8 and d=56.
This code was found by Heurico 1.16 in 0.0114 seconds.