The generator matrix

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

generates a code of length 57 over Z8 who´s minimum homogenous weight is 50.

Homogenous weight enumerator: w(x)=1x^0+107x^50+104x^51+290x^52+232x^53+431x^54+276x^55+484x^56+312x^57+526x^58+292x^59+387x^60+216x^61+165x^62+92x^63+79x^64+8x^65+42x^66+4x^67+31x^68+8x^70+7x^72+1x^74+1x^80

The gray image is a code over GF(2) with n=228, k=12 and d=100.
This code was found by Heurico 1.16 in 0.7 seconds.