Task: Program Execution
Input (English): 1, 13, ['a', '5893', '8377', '7099', 'a', 'x', '8957', '7523', 'g', 'Z', '9781', '8507', '9351', '1577', 'H', 'd', 'U', 'f', 'T', 'T']
Output (English): 935185079781Zg75238957xa709983775893a