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

generates a code of length 57 over Z8 who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+90x^48+169x^52+96x^54+708x^56+640x^58+161x^60+32x^62+84x^64+51x^68+12x^72+3x^76+1x^96

The gray image is a code over GF(2) with n=228, k=11 and d=96.
This code was found by Heurico 1.16 in 0.364 seconds.