RegEx Crossword

I stumbled on the Internet for another game for programmers.
This time regular expressions became the object of bullying - the authors made the Regex Crossword , where instead of the questions there is a set of regular expressions.

The rules are pretty simple:

• Each row and each column corresponds to a rule (at the higher levels - two rules), the answer for this cell will be a symbol that corresponds to all the rules.
• JavaScript is used to check RegEx
• The answer will be some word or even a phrase corresponding to the section title.
• Each job has a title that can be a hint.

There are 9 levels of difficulty, each with 5 tasks (except for the tutorial, with 9 puzzles and Hamlet, with 6 monstrous tasks).
As for me - a pretty good way to start exploring RegEx, remembering forgotten things or thinking up brains.