The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  2  2  2  2  1  2  2  1  2  2  2  2  2  2  2  2
 0  8  0  0  0  0  0  0  0  8  8  8  0  8  8  0  8  8  8  8  0  0  0  8  0  8  8  0
 0  0  8  0  0  0  8  8  8  8  8  0  0  8  8  8  8  0  0  8  8  0  8  8  8  8  0  0
 0  0  0  8  0  8  8  8  0  0  0  0  8  0  8  8  8  8  0  8  0  8  8  0  0  8  8  0
 0  0  0  0  8  8  0  8  8  0  8  8  8  0  0  0  8  8  8  0  0  0  8  8  8  8  0  0

generates a code of length 28 over Z16 who´s minimum homogenous weight is 26.

Homogenous weight enumerator: w(x)=1x^0+18x^26+220x^28+12x^30+3x^32+2x^42

The gray image is a code over GF(2) with n=224, k=8 and d=104.
This code was found by Heurico 1.16 in 0.169 seconds.