"The Jihad of Imam Shamyl", by Kerim Fenari,
http://www.amina.com/article/jihad_imamshamyl.html

 Rank  Occurances  Percentage    4-tuple
       (of 4413)
   1          2    0.0453206%    the time of shariah
   2          2    0.0453206%    the russians attacked the
   3          2    0.0453206%    the chechen and daghestani
   4          2    0.0453206%    the avar people of
   5          2    0.0453206%    his wife fatima was
   6          2    0.0453206%    away during the night