Task: Program Execution
Input (English): 1, 3, ['4787', 'j', 'd', 'U', '7639', '1075', 'W', '5331', 'O', '249', 'q', 'J', 's', 'U', '3121', '6883', '8251', 'e', 'q', 'W']
Output (English): d, j, 4787