The generator matrix

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

generates a code of length 56 over Z8 who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+70x^46+176x^47+397x^48+676x^49+1075x^50+1522x^51+1973x^52+2448x^53+2858x^54+3410x^55+3538x^56+3232x^57+3037x^58+2720x^59+2015x^60+1404x^61+943x^62+568x^63+330x^64+152x^65+112x^66+46x^67+31x^68+20x^69+1x^70+6x^71+2x^72+4x^73+1x^76

The gray image is a code over GF(2) with n=224, k=15 and d=92.
This code was found by Heurico 1.16 in 30.4 seconds.