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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.
Because it's too slow with big numbers:
Please use spoiler flag next time, with the f'string,
'
were already used. Either you use different quotes or escape them.