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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.
Your answer is different from the expected one:
Usually when tests fail it means that the expected solution is not OK.
Is there a reason why I'm failing the tests despite the expected solution being ok? Maybe I am missing something.