Task: Program Execution
Input (English): 9, 17, ['L', '5235', '5701', '9123', '8687', '1671', 'U', 'i', 'k', '4809', 'J', 'S', 'J', '4245', 'p', '1251', 'U', 'e']
Output (English): k4809JSJ4245p1251U