Task: Program Execution
Input (English): 16, 19, ['5881', '5921', '1471', '2665', '3691', '9321', 'u', 'p', '1631', '889', 'L', 'U', '1441', 'r', '4163', '2781', 'P', '8797', 'k', '2565', '8349', '147']
Output (English): 2781, P, 8797, k