Task: Program Execution
Input (English): u p H 6139 N 9969 D C D 491 q 1195 4653 E G C 6843 5297 8473 b 9411 v E G 6273 2747 a 9299 i n 5125 h C L Y Y
Output (English): 4, 6, 10, 12, 13, 17, 18, 19, 21, 25, 26, 28, 31