Sub CleanUp()
With ActiveDocument.Range.Find
  .ClearFormatting
  .Text = "([MR][EI][PS][ST][AU][GR]E:)[^t^s ]@<"
  .Replacement.Text = "\1  "
  .Replacement.ParagraphFormat.LeftIndent = 0
  .Format = True
  .Forward = True
  .Wrap = wdFindContinue
  .MatchWildcards = True
  .Execute Replace:=wdReplaceAll
End With
End Sub