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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.
Isn't this the exact same kata as the one you linked in description?
There is an implicit assumption on the phone number format that makes this requirement equivalent to "ignore all occurrences of
-". If phone number format is fixed, it should be specified in the description.