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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.
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"Run tests" covers only one case when "submit" covers four
I clicked Run test and test failed despite the fact i got good solution. Accidentaly pressed "CTRL + S" and the test went through.