The generator matrix

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

generates a code of length 56 over Z8 who´s minimum homogenous weight is 48.

Homogenous weight enumerator: w(x)=1x^0+77x^48+56x^49+164x^50+164x^51+259x^52+340x^53+360x^54+500x^55+353x^56+436x^57+364x^58+300x^59+265x^60+188x^61+110x^62+60x^63+52x^64+4x^65+18x^66+11x^68+2x^70+5x^72+6x^74+1x^76

The gray image is a code over GF(2) with n=224, k=12 and d=96.
This code was found by Heurico 1.16 in 0.656 seconds.