new to puzzles here. A real life situation led me to consider this. We have a small league of 6 people playing in teams of two. I would like to rotate the teams in such a way that everyone gets an equal chance to play with every other person and against every other person.
e.g. in the first game, it's A+B vs C+D and E+F sit out.
How do I arrange rotations in such a way that everyone gets an equal number of chances to play with every other player and against every other player?