Task: Program Execution
Input (English): 699 465 5563 k 655 9785 Q n 2789 Q 7175 4639 z 7821 5065 5297 z 3477 4223 L w r O 6681 B 3891 U N K P C
Output (English): 4, 7, 8, 10, 13, 17, 20, 21, 22, 23, 25, 27, 28, 29, 30, 31