Task: Program Execution
Input (English): 1, 10, ['E', '9477', 'u', '2711', '5971', '8563', 'x', '7571', '8999', '2213', '3203', 'x', '9529', 'k', '3903', 'J', '8411', '1095', '8617', '4891', '745', 'S', '4581', '7077', '1303']
Output (English): 221389997571x856359712711u9477E