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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.
Yours has MORE RegExp and is LESS readable, what are you talking about. And if the scoring was going to be changed, you'd have to change your patterns in two places instead of one.