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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.
This kata is definitely not 7kyu. It should be level 5.
Nice kata. Thanks!
It was really difficult for me to understand this kata. I had been thinking about it for three days. I understood only when I read the comments. Thank you for kata and for hints.