1. Comedy Trio = AmeSuFin or America x Sweden x Finland
2. Travel Trio or Adventure Trio = America x Japan x N. Italy
3. Yankee Axis or American Axis or New Friends Foursome or Travel Foursome or Adventure Foursome or Younger Brothers Foursome = America x Japan x Germany x N.Italy
4. The Marshall Plan Group = All countries effected by the Marshall Plan
5. Bro Squared = Romano x N. Italy x Canada x America
6. Bro Cubed = Romano x N. Italy x Canada x America x Germany x Prussia
7. Younger Brother Trio = Germany x America x Japan
8. Potato Trio = Germany x America x N.Italy
9. Russia x America x Japan = ??
10. Russia x America x Germany = ??
11. N. Italy x America x Romano = Ameritalia
12. Upward Cowlick Trio or Triple A = Austria x Australia x America
13. Team American Revolution = Spain x France x Prussia x America
14. Russia x America x N. Italy x Germany = ??
15. Double German Burger or Big Mac with sauerkraut = Germany x America x Prussia
Have any other combinations that haven't been named yet? And/or names for them?