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Clan:FH Aachen
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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.
Not a kata issue, you can see the input value your code is failing there, and that's because some chars have a special meaning when used as a regular expression.
Please don't post solutions in Discourse.
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