The generator matrix

 1  1  1  1  1  1  2  0  1  1  1  2  2  1  1  2  1  1
 0  2 12  6  0  6  6  2 12  6 10 10  6 10  0  6  6  0
 0  0  8  0  0  0  0  0  8  0  0  8  8  0  0  8  8  0
 0  0  0  8  0  0  0  0  8  8  8  8  8  8  8  8  8  0
 0  0  0  0  8  0  0  8  8  0  8  8  0  0  0  0  8  0
 0  0  0  0  0  8  0  8  8  8  0  8  0  8  0  0  0  0
 0  0  0  0  0  0  8  8  0  0  8  8  8  8  0  0  0  0

generates a code of length 18 over Z16 who´s minimum homogenous weight is 12.

Homogenous weight enumerator: w(x)=1x^0+23x^12+8x^13+91x^14+152x^15+308x^16+992x^17+949x^18+992x^19+301x^20+152x^21+103x^22+8x^23+7x^24+7x^26+2x^30

The gray image is a code over GF(2) with n=144, k=12 and d=48.
This code was found by Heurico 1.16 in 0.0453 seconds.