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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.
Fixed.
I don't quite understand. Are you saying there is no real problem, but instead there was only some confusion caused by the test output?
There are some minor mistakes (maybe typos) but I also get 3.
Maybe there is a bug.
What was the Kata expected result?
What was the language?
Can you edit and fix?