Task: Program Execution
Input (English): 13, 18, ['F', '3437', 'b', '4077', 'c', '9481', '7517', '4135', 'C', 'H', 'z', 'U', '7445', '3895', 'k', 'v', '4487', 'G', '29', '8075']
Output (English): 74453895kv4487G