The generator matrix

 1  0  0  1  1  1 10  2  1  1  1 14  1  8  1  1  0  1 12 10  1  1  1 14  2  1  6  1  1 12  1  1  1  8  2  1  1 14  1  4  1  1  1  1  0  4  1  1 10  1  1  1  6  6  1  1  0 12  4  1
 0  1  0  8  5 13  1  1 14 11 12 12  3  1  6  9  6  2  1  1  4 15  3  1  6 15  1 10  1  1  7 13  6  1  1 15  4  1  5  2 11  0  9  8  1  0  2  5 10  1  7  3  1 14 12 13  1  1  6  0
 0  0  1 11  3  8 15  2 15  7  2  1 10 13 13 14  1  4 10 13  9  1 12 12  1 13  1  2  5 11  7 12 11  1  6  6  7 15  9  1  3  6  3  1 14  1  6 10  1 10  0  6  6  1 14 13  4  9  1  0

generates a code of length 60 over Z16 who´s minimum homogenous weight is 56.

Homogenous weight enumerator: w(x)=1x^0+72x^56+608x^57+688x^58+760x^59+470x^60+476x^61+253x^62+356x^63+154x^64+80x^65+64x^66+76x^67+22x^68+12x^69+3x^70+1x^72

The gray image is a code over GF(2) with n=480, k=12 and d=224.
This code was found by Heurico 1.16 in 0.218 seconds.