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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.
First of all, you are modifying the value of the argument passed to the function, which you shouldn't. With your loop, you will always repeat the string 6 times, no matter the input.
Second, the function is supposed to return the new string, but it seems that you've deleted it from the passed arguments.
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