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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.
Hi- apologies for the delay in replying. If you fancy another crack at this I have now updated the tests to show the input if you get the wrong answer. Thanks.