The generator matrix

 1  1  1  1  2  1  1
 0  2  0  0  6  0  0
 0  0  2  0  2  0  0
 0  0  0  2  2  0  0
 0  0  0  0  8  0  0
 0  0  0  0  0  8  0

generates a code of length 7 over Z16 who´s minimum homogenous weight is 2.

Homogenous weight enumerator: w(x)=1x^0+77x^2+192x^3+659x^4+960x^5+5663x^6+17664x^7+5663x^8+960x^9+659x^10+192x^11+77x^12+1x^14

The gray image is a code over GF(2) with n=56, k=15 and d=8.
This code was found by Heurico 1.16 in 0.0983 seconds.