The generator matrix

 1  0  0  0  1  1  1  0  1  4  1  1  6  1  2  1  6  1  1  2  1  1  0  4  4  1  1  1  6  1  2  1  1  2  6  1  1  0  1  4  1  4  1  2  1  1  0  0  6  1  4  2  1  1  1  1  1  1
 0  1  0  0  0  4  4  4  1  1  7  3  1  5  1  6  0  6  1  6  3  6  1  2  1  0  2  5  1  3  1  5  2  0  6  2  4  1  7  6  1  1  5  1  5  7  2  0  1  0  1  4  5  6  6  7  4  4
 0  0  1  0  4  1  5  1  5  1  3  0  2  2  1  6  1  5  3  4  1  0  3  1  7  6  7  4  0  6  2  0  2  1  1  6  7  0  4  1  7  5  3  5  2  3  1  1  6  1  1  0  6  5  3  2  1  2
 0  0  0  1  7  7  0  3  4  0  5  6  7  7  5  2  6  1  1  1  4  3  6  3  1  5  2  3  1  0  2  2  3  1  0  5  2  5  7  4  7  5  0  6  5  6  2  6  4  2  2  1  6  7  7  3  5  0

generates a code of length 58 over Z8 who´s minimum homogenous weight is 52.

Homogenous weight enumerator: w(x)=1x^0+104x^52+316x^53+367x^54+406x^55+467x^56+334x^57+385x^58+428x^59+269x^60+244x^61+217x^62+194x^63+148x^64+86x^65+55x^66+24x^67+35x^68+12x^69+4x^71

The gray image is a code over GF(2) with n=232, k=12 and d=104.
This code was found by Heurico 1.16 in 0.491 seconds.