The generator matrix

 1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  2  4  2  2  1  2  1  2  1
 0 12  0  0  0  4 12  4  8 12  8  0  0  4  4  0  8  4 12  8 12  8  8  0
 0  0 12  0  4  4  4  8  0  4  8  4 12  4  8  4 12  0  0  0  8  0  0  0
 0  0  0 12  4  0  4  4  8  0 12  4  8  4  0  4 12 12  8  0  0  8  4  8
 0  0  0  0  8  0  0  8  8  8  0  0  0  8  8  0  8  0  0  0  0  8  0  8
 0  0  0  0  0  8  0  0  0  0  8  0  8  8  8  8  0  8  8  8  0  8  0  8

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

Homogenous weight enumerator: w(x)=1x^0+23x^18+66x^19+114x^20+132x^21+241x^22+838x^23+1309x^24+832x^25+219x^26+110x^27+105x^28+52x^29+27x^30+10x^31+6x^32+8x^33+2x^34+1x^36

The gray image is a code over GF(2) with n=192, k=12 and d=72.
This code was found by Heurico 1.16 in 0.116 seconds.