Task: Program Execution
Input (English): 639 9715 9641 6769 S b 4109 6419 9045 8751 2777 3037 5953 L S 4099 B 2123 q R e z 3699 6937 y t e S E Q t
Output (English): 5, 6, 14, 15, 17, 19, 20, 21, 22, 25, 26, 27, 28, 29, 30, 31