I+S 1I+S 2I+S 3I+S 4I+S 5I+S 6I+S 7I+S 8I+S 9I+S 10I+S 11I+S 12I+S 13I+S 14I+S 15I+S 16I+S 17I+S 18I+S 19I+S 20