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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 works but it is not optimal because it has three loops while being possible with one loop
There are a lot of useless loops in the filter and it may be beautiful but it is not optimal