The generator matrix

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

generates a code of length 56 over Z8 who´s minimum homogenous weight is 49.

Homogenous weight enumerator: w(x)=1x^0+58x^49+150x^50+268x^51+228x^52+424x^53+321x^54+556x^55+202x^56+536x^57+285x^58+398x^59+188x^60+248x^61+118x^62+50x^63+12x^64+6x^65+12x^66+6x^67+8x^68+8x^69+9x^70+2x^71+1x^74+1x^80

The gray image is a code over GF(2) with n=224, k=12 and d=98.
This code was found by Heurico 1.16 in 37.2 seconds.