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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.
Part inside the parentheses is a group, so regex is "(1st group 3 digits)(2nd group 3 digits)(3rd group 4 digits)", dollar sign means group so we change found regex to "(1st group) 2nd group-3rd group", that's it
What?! 😵💫