The generator matrix

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

generates a code of length 25 over Z16 who´s minimum homogenous weight is 18.

Homogenous weight enumerator: w(x)=1x^0+172x^18+448x^20+72x^21+860x^22+552x^23+3594x^24+4944x^25+3663x^26+464x^27+953x^28+104x^29+399x^30+8x^31+120x^32+25x^34+3x^36+1x^38+1x^40

The gray image is a code over GF(2) with n=200, k=14 and d=72.
This code was found by Heurico 1.16 in 1.81 seconds.