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

 Rank  Occurances  Percentage    3-tuple
       (of 4678)
   1          5    0.1068833%    to the russians
   2          3    0.0641300%    women and children
   3          3    0.0641300%    the time of
   4          3    0.0641300%    the death of
   5          3    0.0641300%    the aoul of
   6          3    0.0641300%    of the caucasus
   7          3    0.0641300%    of the caucasian
   8          3    0.0641300%    his wife fatima
   9          3    0.0641300%    chechenya and daghestan
  10          3    0.0641300%    a hundred and
  11          2    0.0427533%    wife fatima was
  12          2    0.0427533%    were forced to
  13          2    0.0427533%    way to the
  14          2    0.0427533%    under the russians
  15          2    0.0427533%    to the mountains
  16          2    0.0427533%    to the aoul
  17          2    0.0427533%    to take up
  18          2    0.0427533%    to make a
  19          2    0.0427533%    time the russians
  20          2    0.0427533%    time of shariah
  21          2    0.0427533%    this time the
  22          2    0.0427533%    thirty years of
  23          2    0.0427533%    the russians attacked
  24          2    0.0427533%    the russian orthodox
  25          2    0.0427533%    the most inaccessible
  26          2    0.0427533%    the imam was
  27          2    0.0427533%    the imam had
  28          2    0.0427533%    the chechen and
  29          2    0.0427533%    the centre of
  30          2    0.0427533%    the caucasians had
  31          2    0.0427533%    the capture of
  32          2    0.0427533%    the black sea
  33          2    0.0427533%    the avar people
  34          2    0.0427533%    the aoul and
  35          2    0.0427533%    that shamyl had
  36          2    0.0427533%    ten thousand men
  37          2    0.0427533%    son ghazi muhammad
  38          2    0.0427533%    russians attacked the
  39          2    0.0427533%    retreated to the
  40          2    0.0427533%    resistance against the
  41          2    0.0427533%    over two thousand
  42          2    0.0427533%    over to the
  43          2    0.0427533%    of the forest
  44          2    0.0427533%    of all the
  45          2    0.0427533%    more than a
  46          2    0.0427533%    in the caucasus
  47          2    0.0427533%    hundred and fifty
  48          2    0.0427533%    he told them
  49          2    0.0427533%    had to be
  50          2    0.0427533%    ghazi mollah he
  51          2    0.0427533%    during the night
  52          2    0.0427533%    down from the
  53          2    0.0427533%    cut down the
  54          2    0.0427533%    chechen and daghestani
  55          2    0.0427533%    captured and destroyed
  56          2    0.0427533%    by the russians
  57          2    0.0427533%    but slowly the
  58          2    0.0427533%    away during the
  59          2    0.0427533%    avar people of
  60          2    0.0427533%    at the aoul
  61          2    0.0427533%    and by the
  62          2    0.0427533%    along a precipice
  63          2    0.0427533%    after a bitter
  64          2    0.0427533%    a russian officer