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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.
Disregard my comment
If I am reading the test suite correctly, there's 100 random test cases, each of them with length of the pattern generated as
l <- floor(runif(1, 0, 11)). As much as I am unable to read R, I still believe you can expect a couple of test cases of length 9 or 10.