Task: Program Execution
Input (English): 3, 6, ['6753', 'c', 's', '5395', 'b', '3395', '3121', '8505', '4645', '1287', 'Q', 'x', 't', 'B', 'w', '2831', 'H', '4089', 'a', '6469']
Output (English): 5933b5935s