Task: Program Execution
Input (English): 10, 15, ['7251', '3631', '3859', '2553', 'n', 'E', 'Z', '9207', '7503', '4881', 'w', 'w', 'K', '1043', 'x', '1893', '7637', '8549', 'i', 'E', '8397', 'N', 'Z']
Output (English): 4881wwK1043x