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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.
Paste your code using proper markdown and marking your post as having spoiler content, I like mysteries, but nobody can help you with so little information (you didn't even mention the language you're trying).