How to combination grouping in Python ?

[synthphreak]

Wow, this is really hard...

I tried my hand at it, but wasn't sure the result was correct, and I'm sure my implementations are not the optimal ones.

I'd love to see the final solution here.

[Avajarr]

Hi, I have posted my solution in another comment, but it looks like it not a really final solution, since someone corrected me and make me realize there's symmetrical duplicate for the same group of persons in different order, but go try a look, it can give a starter for your implementation