Task: Program Execution
Input (English): 4249 d q C 3315 7747 C P 7511 2807 I v L 3877 x m N M 2953 l 9749 w g n O
Output (English): 2, 3, 4, 7, 8, 11, 12, 13, 15, 16, 17, 18, 20, 22, 23, 24, 25