Task: Program Execution
Input (English): u 5951 7961 7337 h 4613 4877 e 8467 w 957 3391 r t 4477 w W R M p b 7573 m 2453 P d
Output (English): 2, 3, 4, 6, 7, 9, 11, 12, 15, 22, 24