STOPWORDS_3 = %w[
    the
    of
    and
    a
    in
    to
    it
    is
    was
    I
    for
    that
    you
    he
    be
    with
    on
    by
    at
    have
    are
    not
    this
    but
    had
    they
    his
    from
    she
    which
    or
    we
    an
    were
    as
    do
    been
    their
    has
    would
    there
    what
    will
    all
    if
    can
    her
    said
    who
    one
    so
    up
    them
    when
    some
    could
    him
    into
    its
    then
    two
    out
    time
    my
    about
    did
    your
    now
    me
    other
    only
    just
    more
    these
    also
    any
    see
    very
    may
    well
    should
    than
    how
    get
    way
    our
    made
    got
    after
    many
    those
    go
    being
    because
    down
    such
    through
    over
    must
    still
    even
    take
    too
    here
    come
    own
    last
    does
    oh
    say
    no
    where
    us
    same
    might
    yes
    however
    put
    world
    another
    want
    most
    again
    never
    under
    much
    why
    each
    while
    off
    went
    used
    without
    give
    within
  ]
RE_STOPWORDS_15 = '(?:'+STOPWORDS_3[0..15].join("|")+')'
