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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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I hate every kata where the question is more complicated than its solution...
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"And what about the number 1010000000000000000000000000000000000000000000000000000000000000000 ?"
How often do you use that large number?