Task: Program Execution
Input (English): 9, 15, ['8237', 'x', '5513', '6629', '377', '2157', 'D', '7547', '2221', '5475', '8631', '6493', 'L', '7297', '9303', 'V', 'E', '249']
Output (English): 2221, 5475, 8631, 6493, L, 7297, 9303