Task: Program Execution
Input (English): 4, 17, ['2157', 'i', '5845', '7781', 'z', 'Z', 'd', '8439', '2193', 'g', 'o', '7201', '3147', 'B', '5313', '1439', '7179', 'u', 'a', '5265', '9447']
Output (English): 717914395313B31477201og21938439dZz7781