The generator matrix

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

generates a code of length 8 over Z16 who´s minimum homogenous weight is 6.

Homogenous weight enumerator: w(x)=1x^0+8x^6+56x^7+126x^8+56x^9+7x^10+1x^12+1x^14

The gray image is a code over GF(2) with n=64, k=8 and d=24.
This code was found by Heurico 1.16 in 0.000489 seconds.