Task: Program Execution
Input (English): A F 3971 3137 5703 6357 2129 W a L r 3927 9277 B 4461 P Y 3859 6095 2081 b C 3333 2039 d 8879 9561
Output (English): 1, 2, 8, 9, 10, 11, 14, 16, 17, 21, 22, 25