"Pride and Prejudice", by Jane Austen

 Rank  Occurances  Percentage    3-tuple
       (of 107512)
   1         62    0.0576680%    i do not
   2         62    0.0576680%    i am sure
   3         55    0.0511571%    as soon as
   4         50    0.0465064%    she could not
   5         37    0.0344148%    that he had
   6         34    0.0316244%    it would be
   7         34    0.0316244%    in the world
   8         32    0.0297641%    i am not
   9         31    0.0288340%    i dare say
  10         30    0.0279039%    it was not
  11         30    0.0279039%    could not be
  12         28    0.0260436%    that it was
  13         28    0.0260436%    that he was
  14         28    0.0260436%    on the subject
  15         27    0.0251135%    would have been
  16         27    0.0251135%    as well as
  17         25    0.0232532%    one of the
  18         25    0.0232532%    he had been
  19         25    0.0232532%    by no means
  20         25    0.0232532%    and she was
  21         24    0.0223231%    that she had
  22         23    0.0213930%    the rest of
  23         23    0.0213930%    it was a
  24         23    0.0213930%    in spite of
  25         23    0.0213930%    a great deal
  26         22    0.0204628%    uncle and aunt
  27         22    0.0204628%    that she was
  28         22    0.0204628%    she did not
  29         22    0.0204628%    i have not
  30         22    0.0204628%    i did not
  31         21    0.0195327%    not to be
  32         21    0.0195327%    do not know
  33         20    0.0186026%    she had been
  34         20    0.0186026%    it is not
  35         20    0.0186026%    it is a
  36         20    0.0186026%    i have been
  37         20    0.0186026%    could not help
  38         20    0.0186026%    could not have
  39         19    0.0176724%    that i am
  40         19    0.0176724%    but it is
  41         19    0.0176724%    as much as
  42         18    0.0167423%    to make her
  43         18    0.0167423%    there was a
  44         18    0.0167423%    the honour of
  45         18    0.0167423%    that she could
  46         18    0.0167423%    that he should
  47         18    0.0167423%    miss de bourgh
  48         18    0.0167423%    it will be
  49         18    0.0167423%    i assure you
  50         18    0.0167423%    had not been
  51         18    0.0167423%    be able to
  52         18    0.0167423%    as to the
  53         18    0.0167423%    and it was
  54         18    0.0167423%    and i am
  55         17    0.0158122%    will not be
  56         17    0.0158122%    which she had
  57         17    0.0158122%    to be sure
  58         17    0.0158122%    to be in
  59         17    0.0158122%    the same time
  60         17    0.0158122%    the next morning
  61         17    0.0158122%    of the family
  62         17    0.0158122%    made no answer
  63         17    0.0158122%    it to be
  64         17    0.0158122%    in love with
  65         17    0.0158122%    i am afraid
  66         17    0.0158122%    as they were
  67         16    0.0148821%    you will be
  68         16    0.0148821%    you do not
  69         16    0.0148821%    i will not
  70         16    0.0148821%    he did not
  71         16    0.0148821%    at the same
  72         16    0.0148821%    a young man
  73         15    0.0139519%    you will not
  74         15    0.0139519%    the whole party
  75         15    0.0139519%    the whole of
  76         15    0.0139519%    she would not
  77         15    0.0139519%    she was not
  78         15    0.0139519%    rest of the
  79         15    0.0139519%    out of the
  80         15    0.0139519%    i should be
  81         15    0.0139519%    him to be
  82         15    0.0139519%    but it was
  83         15    0.0139519%    but i am
  84         14    0.0130218%    to be a
  85         14    0.0130218%    there was no
  86         14    0.0130218%    there is no
  87         14    0.0130218%    the pleasure of
  88         14    0.0130218%    the course of
  89         14    0.0130218%    that she would
  90         14    0.0130218%    that it would
  91         14    0.0130218%    of the room
  92         14    0.0130218%    looked at her
  93         14    0.0130218%    lady catherine de
  94         14    0.0130218%    it is very
  95         14    0.0130218%    in the course
  96         14    0.0130218%    in such a
  97         14    0.0130218%    if he had
  98         14    0.0130218%    her uncle and
  99         14    0.0130218%    and he was
 100         14    0.0130218%    am sure i