The generator matrix

 1  0  1  1  6  1  1  1  4  1  1 12  1  1  2 10  0 12
 0  1  1  6  1 11 13  4  1  2  3  1 14 12 10  1  2  1
 0  0  2  0  8  4 12  2  2 10 14 14 10  6  6  6 14  8
 0  0  0  8  8  0  8  8  8  0  8  0  8  0  0  8  8  8

generates a code of length 18 over Z16 who´s minimum homogenous weight is 15.

Homogenous weight enumerator: w(x)=1x^0+194x^15+498x^16+836x^17+1096x^18+844x^19+402x^20+152x^21+48x^22+18x^23+3x^24+4x^25

The gray image is a code over GF(2) with n=144, k=12 and d=60.
This code was found by Heurico 1.16 in 0.0422 seconds.