The generator matrix

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

generates a code of length 24 over Z16 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+197x^18+1198x^19+4298x^20+13380x^21+28455x^22+53338x^23+59717x^24+53994x^25+29224x^26+13034x^27+3780x^28+1184x^29+259x^30+62x^31+12x^32+2x^33+9x^34

The gray image is a code over GF(2) with n=192, k=18 and d=72.
This code was found by Heurico 1.16 in 164 seconds.