The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+98x^52+326x^53+311x^54+494x^55+399x^56+428x^57+326x^58+412x^59+261x^60+298x^61+196x^62+186x^63+136x^64+88x^65+42x^66+56x^67+17x^68+12x^69+5x^70+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 1.11 in 0.32 seconds.