The generator matrix

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

generates a code of length 24 over Z16 who´s minimum homogenous weight is 21.

Homogenous weight enumerator: w(x)=1x^0+152x^21+751x^22+680x^23+1149x^24+512x^25+566x^26+176x^27+82x^28+8x^29+11x^30+8x^31

The gray image is a code over GF(2) with n=192, k=12 and d=84.
This code was found by Heurico 1.16 in 0.063 seconds.