Task: Program Execution
Input (English): 4, ['L', '1753', '2975', 'C', '1927', 'd', 'N', 'M', 'n', '4889', 'c', 'J', '9335', '6807', '9805', 'T', '3891', '6847', '6187', 'J', 'S', '3941', '6899', '2645', 'A']
Output (English): L, 1753, 2975, C