"The Secret Agent", by Joseph Conrad

 Rank  Occurances  Percentage    1-tuple
       (of 90144)
   1       5547    6.1534878%    the
   2       3738    4.1466986%    of
   3       2435    2.7012336%    a
   4       2078    2.3052006%    to
   5       1956    2.1698616%    and
   6       1704    1.8903088%    he
   7       1646    1.8259673%    his
   8       1618    1.7949059%    in
   9       1241    1.3766862%    was
  10       1001    1.1104455%    that
  11        955    1.0594160%    with
  12        898    0.9961839%    it
  13        852    0.9451544%    had
  14        745    0.8264554%    her
  15        734    0.8142528%    for
  16        718    0.7965034%    you
  17        687    0.7621140%    on
  18        659    0.7310525%    i
  19        656    0.7277245%    not
  20        627    0.6955538%    verloc
  21        597    0.6622737%    she
  22        589    0.6533990%    as
  23        567    0.6289936%    at
  24        534    0.5923855%    mr
  25        525    0.5824015%    but
  26        473    0.5247160%    him
  27        455    0.5047480%    by
  28        454    0.5036386%    an
  29        430    0.4770146%    this
  30        391    0.4337504%    be
  31        358    0.3971424%    have
  32        340    0.3771743%    out
  33        337    0.3738463%    from
  34        328    0.3638623%    all
  35        326    0.3616436%    is
  36        316    0.3505502%    no
  37        297    0.3294728%    would
  38        283    0.3139421%    been
  39        281    0.3117235%    mrs
  40        280    0.3106141%    what
  41        253    0.2806621%    which
  42        248    0.2751154%    if
  43        240    0.2662407%    very
  44        237    0.2629127%    man
  45        226    0.2507100%    there
  46        224    0.2484913%    into
  47        221    0.2451633%    said
  48        220    0.2440540%    up
  49        216    0.2396166%    could
  50        203    0.2251952%    were
  51        199    0.2207579%    its
  52        195    0.2163206%    me
  53        193    0.2141019%    did
  54        190    0.2107739%    they
  55        186    0.2063365%    like
  56        174    0.1930245%    chief
  57        170    0.1885871%    so
  58        169    0.1874778%    one
  59        168    0.1863685%    or
  60        167    0.1852591%    inspector
  61        165    0.1830405%    time
  62        165    0.1830405%    ossipon
  63        164    0.1819311%    then
  64        157    0.1741658%    are
  65        156    0.1730564%    himself
  66        153    0.1697284%    do
  67        149    0.1652911%    my
  68        148    0.1641818%    some
  69        147    0.1630724%    assistant
  70        144    0.1597444%    your
  71        143    0.1586351%    without
  72        143    0.1586351%    who
  73        140    0.1553071%    know
  74        140    0.1553071%    head
  75        139    0.1541977%    face
  76        138    0.1530884%    stevie
  77        138    0.1530884%    other
  78        138    0.1530884%    eyes
  79        137    0.1519791%    over
  80        136    0.1508697%    only
  81        135    0.1497604%    more
  82        133    0.1475417%    now
  83        132    0.1464324%    verlocs
  84        131    0.1453230%    commissioner
  85        130    0.1442137%    little
  86        124    0.1375577%    upon
  87        121    0.1342297%    thought
  88        121    0.1342297%    their
  89        119    0.1320110%    way
  90        118    0.1309017%    much
  91        117    0.1297923%    after
  92        115    0.1275737%    nothing
  93        115    0.1275737%    made
  94        115    0.1275737%    back
  95        113    0.1253550%    too
  96        111    0.1231363%    seemed
  97        108    0.1198083%    woman
  98        108    0.1198083%    before
  99        107    0.1186990%    when
 100        105    0.1164803%    heat