Task: Program Execution
Input (English): 5105 1691 L F W 6967 S 4857 v L x 7615 E T 4929 5515 b p u 6673 6349 8969 9657 8973 O q D B 717 3761 D
Output (English): 3, 4, 5, 7, 9, 10, 11, 13, 14, 17, 18, 19, 25, 26, 27, 28, 31