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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.
That means, you should removed them. And a problem with your code is not a kata issue, please read this: https://docs.codewars.com/training/troubleshooting
Your code not working is not an issue (= a bug in the kata), Please read this: https://docs.codewars.com/training/troubleshooting/