Task: Program Execution
Input (English): 4607 U 8473 p y 9889 9373 x 7693 8493 B 4499 S 21 Z k p o 3773 6843 S 7035 j 4789 7225 k D 5931
Output (English): 2, 4, 5, 8, 11, 13, 15, 16, 17, 18, 21, 23, 26, 27