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SUBMIT YOUR IDEAThanks to @TonyA , we relied heavily on your posted solution. Brilliant!
I decided to start this one fresh, without looking back at my solution to challenge #247 - Pairing Partners. (where I used Schurig tables). This time, I implemented the algorithm of rotating the teams around one fixed team.
Workflow:
Output (my pairings are in a different order than the provided solution):