Root
  Inactive*
    reviewRegions -> Regions
    reviewTwoOptions -> TwoOptions

  Active
    Question
      Regions
        RegionsReview*
          close -> Inactive
          edit -> RegionsEdit
          answer -> ThankU
        RegionsEdit
          cancel -> RegionsReview
          submit -> ThankU

      TwoOptions
        TwoOptionsReview*
          close -> Inactive
          answer -> ThankU

    ThankU
      close -> Inactive