The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+436x^52+424x^54+878x^56+680x^58+899x^60+408x^62+268x^64+24x^66+54x^68+20x^72+3x^76+1x^80

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 49.2 seconds.