Task: Program Execution
Input (English): 8, 17, ['6041', 'H', 'c', 'd', '509', '3957', '8001', 'a', '4639', 'Z', '5607', 'c', '9', '9741', 'U', '4659', 'T', '8199']
Output (English): T4659U97419c5607Z4639a