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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 is preventing both the test cases and the submission tests from running, meaning this kata can not be completed. Since this has been an issue for a month, maybe converting the kata to regular old javascript might be an option?
The description is a bit hard to understand, with the use of terms such as "word characters" and "letter characters"