A breeze.

meh

Enjoyable.. But the trouble with false groups like this one is that it's very obvious what can and can't be in the group- so at best the solver will try them and discover they do't form a four. Fake groups are most effective when the solver gets convinced to go on a wild goose chase for a fifth or sixth member... Still good tho

I am not sure if I like how you put north, south, east, west. I bet a lot of people did that. Good Trick!

erh