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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.
If you are brute-forcing your way to the solution, it is very likely that you are timing out.
Which language? What is wrong? Look at the top of the ppage to see how many people passed the kata.