In our indexes, we have millions of URLs each of which has a link to some page contents, that is, URL->contents. Now, suppose a user types a query with wild cards *, which represent 0 or multiple occurrences of any characters, how do you build the indexes such that such a type of query can be executed efficiently by finding all corresponding URLs- >contents efficiently. For example, given a query http://www.*o*ve*ou.com. You need to find iloveyou.com, itveabcu.com, etc.
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