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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.
Yeap)
you dont need bignumbers.
Just write the strings one below the other like in school and add the individual digits, overflowing to the next number.
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2nd line of the description.