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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.
It's 7 kyu kata, I don't think there's a need to make it more complicated than it already is
Is this a question? The short answer is probably "no".
The long answer is that tests are specifically written to avoid 64 bit overflow, so the answer is probably "no".