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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.
Answered.
It's been fixed, try again.
I expect s1 and s2 are strings but there are also lists for tests in Python?
Are there punctuation marks in the samples?
The rules for spaces between words are really confusing.