class Word < Object

  int char_at(int index)
    index = index + 2
    return get_internal(index)
  end

  int set_length(int i)
    set_internal( 2 , i)
    return i
  end

  Word push_char(int i)
    int l = self.char_length + 1
    self.set_length(l)
    l = l + 2
    set_internal( l , i)
    return self
  end
end