The generator matrix

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

generates a code of length 23 over Z16 who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+304x^20+336x^21+1180x^22+616x^23+1006x^24+320x^25+268x^26+8x^27+48x^28+8x^30+1x^32

The gray image is a code over GF(2) with n=184, k=12 and d=80.
This code was found by Heurico 1.16 in 0.27 seconds.