Task: Program Execution
Input (English): 4, 8, ['L', 'a', 'l', '5797', '6733', 'f', 'x', 'O', '2199', 'v', 'n', '2983', 'K', 'n', '5695', '9871', 'U', '1323', '2153', 'v', '7897']
Output (English): 57976733fxO