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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Oh, because then it's just a tuple, and it's even better because we don't need mutability here. I forgot about tuples in my solution, I tend to stick to list generators and I need to work on that :P