Task: Program Execution
Input (English): 3255 1219 x 4253 U 7767 4287 4819 d 9719 605 r x 6655 F 7123 L H A x o v h q w 631 z 3423 O
Output (English): 3, 5, 9, 12, 13, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 29