regex

Try to match the first six words completely while not matching any of the last six words at all. When they all have checkmarks, you've gotten it. The shorter the regex, the lower the score, the better you are. Currently, there are only 4 levels, and the lowest score I ever got was 55.
Level: 1
Score: 0
  • rotation
  • rotten
  • rotisserie
  • rottweiler
  • rotator
  • rotunda
  • godot
  • wrote
  • tornado
  • roman
  • retail
  • holiday

You should omit any surrounding '/'s and any modifiers.