Task: Program Execution
Input (English): 3937 1953 1509 P L 4193 J Z z 5829 2621 8721 3963 4591 l g 4373 355 7291 L S 1775 d c O
Output (English): 3937, 1953, 1509, 4193, 5829, 2621, 8721, 3963, 4591, 4373, 355, 7291, 1775