The generator matrix

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

generates a code of length 21 over Z16 who´s minimum homogenous weight is 20.

Homogenous weight enumerator: w(x)=1x^0+132x^20+112x^22+10x^24+1x^32

The gray image is a code over GF(2) with n=168, k=8 and d=80.
This code was found by Heurico 1.16 in 0.00541 seconds.