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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.
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It's so incredible
My result very similar this
Awesome
Your can try this '[{}]{', the last one '{' will process stack.append('{'). You need to determine whether there is excess