Task: Program Execution
Input (English): u L f 4719 6323 R z 9823 e 4839 5337 7081 115 p 9895 R 817 h 9585 G 7505 849 7035 u i 9815 2139 O 1511 O 7687 o W j
Output (English): 4, 5, 8, 10, 11, 12, 13, 15, 17, 19, 21, 22, 23, 26, 27, 29, 31