Task: Program Execution
Input (English): x 4471 U 9393 F 1275 3941 d 6861 b L Q S Z w 2135 R u 3525 9691 7067 c 9365 W F P I 7621 6677 s
Output (English): 2, 4, 6, 7, 9, 16, 19, 20, 21, 23, 28, 29