Task: Program Execution
Input (English): 7615 Y u Y 5131 s 3751 1427 B a Q M 3645 D 8247 2787 e o 727 8071 3017 2767 b N 2009 s P Y H x N O 3975 F a 6209 6685
Output (English): 1, 5, 7, 8, 13, 15, 16, 19, 20, 21, 22, 25, 33, 36, 37