Task: Program Execution
Input (English): 3981 1009 Z 6621 7145 6137 4969 6529 W 2591 O S 1317 2167 6359 V 8555 3495 v 1299 4705 W y 2745 B 249 u j 1843 K z V 2073
Output (English): 1, 2, 4, 5, 6, 7, 8, 10, 13, 14, 15, 17, 18, 20, 21, 24, 26, 29, 33