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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.
".(.)(.*)(.)" - in this regex we split our word into four blocks
and then we get only first (numeration starts from zero), second and third blocks and change their order "$3$2$1".
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