A,B
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Recent Referers:
  1. http://formula.s21g.com/?A,B
  2. http://formula.s21g.com/
  3. http://blog.s21g.com/articles/2012.8
  4. http://blog.s21g.com/?page=7&fb_locale=ja_JP
  5. http://blog.s21g.com/?page=7