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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.
It may be helpful to mark the start and end of you regex. You also shouldn't use the 'thing' to check for actual characters.
You can see with the log where the problem is, you should look for the next letter in the name once you've found one and so on. Remember you code should work case-insensitively too.
I'm glad you enjoyed it.