Task: Program Execution
Input (English): 9129 5659 8979 Q G 4393 2445 Y 5675 M b c 3923 8283 5185 N u e 9599 6563 a 9411 8757 W 6217 u 3245 4455 1593 6219 Z 6651
Output (English): 4, 5, 8, 10, 11, 12, 16, 17, 18, 21, 24, 26, 31