The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  0  2  0  2  1  2  1  1  1  1  4  1  1  0  0  0  1  2  1  1  2  1  4  1  2
 0  2  0  0  0  0  0  0  0  2  6  2  2  4  0  6  6  6  6  4  4  2  6  2  0  2  2  4  2  2  0  4  4  6  2  6  0  6  6  0  4  4  2  0  2  4  0  4  6  0  0  2  6  2  2  2  2
 0  0  2  0  0  0  2  6  2  2  2  4  2  4  6  4  0  2  4  2  2  4  0  6  0  0  6  0  2  2  4  6  2  2  2  0  6  0  2  4  4  6  4  0  6  2  0  2  6  6  6  4  4  2  6  2  6
 0  0  0  2  0  2  2  2  4  4  0  0  2  6  6  6  0  2  6  0  6  0  6  4  4  2  0  4  2  2  6  0  0  6  6  0  0  6  4  4  6  4  4  0  4  2  2  0  2  0  4  4  4  4  2  6  0
 0  0  0  0  2  2  4  6  2  4  2  2  6  4  2  4  4  0  2  6  4  2  0  4  4  2  2  6  6  0  6  6  4  0  0  4  0  4  0  2  6  2  2  6  6  6  0  0  4  6  0  0  4  0  4  6  4
 0  0  0  0  0  4  4  4  0  0  4  4  4  4  0  0  4  4  0  4  0  0  4  4  4  4  0  4  0  0  0  4  0  0  4  0  4  0  4  0  4  4  4  0  0  4  4  0  0  0  4  0  4  0  4  0  4

generates a code of length 57 over Z8 who´s minimum homogenous weight is 49.

Homogenous weight enumerator: w(x)=1x^0+72x^49+147x^50+136x^51+224x^52+240x^53+293x^54+402x^55+377x^56+428x^57+414x^58+354x^59+269x^60+212x^61+146x^62+94x^63+92x^64+60x^65+51x^66+30x^67+27x^68+12x^69+4x^70+8x^71+2x^72+1x^86

The gray image is a code over GF(2) with n=228, k=12 and d=98.
This code was found by Heurico 1.16 in 3.33 seconds.