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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.
The if block will return False, the moment it encounters a letter not in the alaphabet. Otherwise, it will return True.
what will happen if the input will not contain all the alphabet? will it return True?