Task: Program Execution
Input (English): 1649 f 427 W 3699 1827 g 4217 6577 B y m t 9757 b A Z s 9429 6421 X 2839 b r L O 8383 9693 z Q p 5355 1455 5789 E O r
Output (English): 2, 4, 7, 10, 11, 12, 13, 15, 16, 17, 18, 21, 23, 24, 25, 26, 29, 30, 31, 35, 36, 37