Task: Program Execution
Input (English): 6, ['4007', '4075', 'f', '9987', '6741', '4733', '7755', 'k', '3449', 'q', '2837', '2621', 'T', 'W', '3915', 'J', '1217', '747', '6605', '1329', 'y', 'U', '857']
Output (English): 4007, 7755, T, 6605