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  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  0  0  6  6  4  4  2  6  4  4  6  2  4  4  2  6  4  4  6  2  0  4  2  6  0  0  6  6  0  2  2  4  4  2  0  2  6  4  6  6  0  4  0  6  4  4  0
 0  0  2  2  0  6  6  0  4  6  6  4  4  2  2  4  4  2  2  0  4  2  6  4  0  6  6  4  0  6  2  0  0  2  2  0  0  6  2  4  4  2  4  2  4  6  6  0  0  6  4  6  4  4  2  2  0  0  0
 0  0  0  4  4  4  0  4  4  0  4  0  0  4  0  4  0  0  0  0  4  4  4  4  4  4  0  0  0  0  4  4  0  0  0  0  4  4  4  4  4  4  0  4  0  0  0  4  4  4  0  4  0  4  0  0  4  0  0

generates a code of length 59 over Z8 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+9x^56+24x^57+22x^58+144x^59+22x^60+24x^61+9x^62+1x^118

The gray image is a code over GF(2) with n=236, k=8 and d=112.
This code was found by Heurico 1.16 in 0.073 seconds.