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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.
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Could someone explain to me why 1.2.3.4 is an invalid IP. As I have checked and it's is use somewhere in AUS, so I'm not sure how it should be false
Should maybe consider added the 1666 test case as I was looking over my solution and I noticed I would of failed if that was one of the test thou I have now fixed it. Might be the case for some other solutions as well.