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  8  2  8  0  0  1  1  1  8  2  2  1 12  2  8  1  2  1  1  2  2  2  2  2  2  1  0 12  1  1  1  1
 0  2  0  0  0  2 14  2  4 12 14 10 12 14 12 14  4 14  0  4  2 10  4  6  6  4  2  8  2 12  2 12 14  6  2 10 10  0  2 10 12 12  2 14 14  8  0  4  6 10  2 12  2  8  2  0  6  8
 0  0  2  0  2  2 10  8  0  0  2 10  6  4 14  4  8  8  4  2 14 10  2  0  4 14  4  4 10  2 12  8 14  0  6  2  8 10  2 10  2  4  4 14  8  0  6 10  0  0 14 10  4  4  8 14 14  8
 0  0  0  2  2  8  2  6 14  4  4 14 14 10 12  4 10 14 12  6 12  6 12  0 12  2  8  2 12  4 10  2  8 14 10  8 10  4 10 14  2 10  0 10  2  6  8 14  6 14  0 10 10  2 10  0 10  8
 0  0  0  0  4  0  4 12 12 12 12  8  8  0 12 12 12  0  0  4  0 12 12 12  8  0  8 12  4  0  8  8  4 12  4 12 12 12  8  4 12  0  4  8  4  8  0  8  0  0  8  8  4  0 12  8  0  8

generates a code of length 58 over Z16 who´s minimum homogenous weight is 50.

Homogenous weight enumerator: w(x)=1x^0+147x^50+410x^51+658x^52+1268x^53+1728x^54+2536x^55+3329x^56+4240x^57+4196x^58+4368x^59+3430x^60+2520x^61+1550x^62+1038x^63+582x^64+394x^65+177x^66+90x^67+59x^68+24x^69+10x^70+6x^71+4x^72+2x^73+1x^76

The gray image is a code over GF(2) with n=464, k=15 and d=200.
This code was found by Heurico 1.16 in 16.1 seconds.