The generator matrix

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

generates a code of length 6 over Z16 who´s minimum homogenous weight is 2.

Homogenous weight enumerator: w(x)=1x^0+36x^2+48x^3+135x^4+720x^5+2216x^6+720x^7+135x^8+48x^9+36x^10+1x^12

The gray image is a code over GF(2) with n=48, k=12 and d=8.
This code was found by Heurico 1.16 in 0.00258 seconds.