Task: Program Execution
Input (English): 1, 5, ['r', '7113', 'g', '8557', '1569', '9013', 'U', 'b', 'f', 'Z', '5661', 'W', '8389', '3595', 'q', '4957', 'i', 'C', '9671', '4441', 'C', '2949']
Output (English): 15698557g7113r