Task: Program Execution
Input (English): 1, 4, ['Z', 'r', '1987', 'f', '423', 'q', '1005', '4605', '5395', 'h', '7315', '3837', '5249', '6963', 'x', '4975', 'y', '2243', '4523', 'y', '5423']
Output (English): Z, 423, 5395, 5249, y, 5423