Hi everyone, I have found some strange tenses for the main VP's in the articles, such as: 22, 23 (perfect+perfect+past, or perf+perf+present?). I wonder if anyone found the same. Thanks, Hoang. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://list.cs.brown.edu/pipermail/cs241/attachments/20070923/7ae3da4c/attachment.htm