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

generates a code of length 57 over Z8 who´s minimum homogenous weight is 51.

Homogenous weight enumerator: w(x)=1x^0+76x^51+315x^52+420x^53+414x^54+412x^55+391x^56+380x^57+328x^58+316x^59+267x^60+236x^61+166x^62+148x^63+120x^64+52x^65+20x^66+8x^67+26x^68

The gray image is a code over GF(2) with n=228, k=12 and d=102.
This code was found by Heurico 1.16 in 0.469 seconds.