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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.
No problem, thank you for taking the time to solve it :)
If you're really stuck paste your code here and mark it as spoiler I'll try to help.
In these kind of katas the author should always emphasize if whitespace should be preserved, otherwise people are confused what to do. The testing is accurate about the details because that is how TDD works. It compares if your string is identical to the correct string. Check if you added a newline at the very end end that might be a problem and if you figured out the whitespace on one side it should be same on the other.
The dash '-' following the open paren '(' says essentially that character must be a dash, and then the character following that must be a capital letter per '[A-Z]'.