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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.
Some of the solutions submitted on the easy version can pass the tests here. I don't see any point in this kata now and I suggest you to unpublish it, considering how troublesome it will be in case of approval.