The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+152x^52+212x^53+457x^54+312x^55+514x^56+332x^57+481x^58+256x^59+394x^60+198x^61+282x^62+128x^63+201x^64+50x^65+54x^66+32x^67+14x^68+6x^69+5x^70+8x^71+4x^72+2x^73+1x^74

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 0.595 seconds.