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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.
Thanks. When I did this kata in some of the other languages, I actually used base 4 instead because that made the regexp simpler.
Since this is still in beta, this kata is not yet rated. However, the current average rank is ~4kyu, so I doubt that it will be a 8kyu kata after its beta.