Task: Program Execution
Input (English): 2717 4787 4931 n r 2421 2791 7837 w g K F L 5567 8245 8861 4435 1761 O 7053 C Z f 7173 779 p B E
Output (English): 1, 2, 3, 6, 7, 8, 14, 15, 16, 17, 18, 20, 24, 25