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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.
People commenting you should have stored strings over lists are dumb.
You should have put the same number in your adjacents dictionary though.
That way you can write: "adjacents[observed]" instead of "adjacents[observed] + [observed]"