The generator matrix

 1  0  1  1  1  1  8  1
 0  1 11  6 11  0  1  8
 0  0 12  0  0 12  0  8
 0  0  0 12  0 12  4  8
 0  0  0  0 12 12  0 12
 0  0  0  0  0  8  8  8

generates a code of length 8 over Z16 who´s minimum homogenous weight is 3.

Homogenous weight enumerator: w(x)=1x^0+18x^3+71x^4+266x^5+1622x^6+5860x^7+17087x^8+5860x^9+1636x^10+266x^11+57x^12+18x^13+6x^14

The gray image is a code over GF(2) with n=64, k=15 and d=12.
This code was found by Heurico 1.16 in 0.148 seconds.