The generator matrix

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

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

Homogenous weight enumerator: w(x)=1x^0+160x^52+220x^53+400x^54+312x^55+590x^56+308x^57+502x^58+236x^59+370x^60+216x^61+270x^62+144x^63+150x^64+84x^65+68x^66+12x^67+37x^68+4x^69+6x^70+3x^72+2x^74+1x^76

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 0.575 seconds.