Whether or not a collection of facts can be subject to copyright varies across jurisdiction - in the US you can't copyright the phone book, while the EU has a s

Whether or not a collection of facts can be subject to copyright varies across jurisdiction - in the US you can't copyright the phone book, while the EU has a specific concept of database rights. What's critical in the US case is whether there's any creative expression in the collection of facts or whether it's effectively mechanical, and whether the w3w wordlist would be protected under that would seem like an interesting case.