Task: Program Execution
Input (English): 4, 18, ['h', '6181', '6721', '3231', '9863', 'f', 'r', 'd', 'j', '6827', '4485', '4823', '7619', 'J', '3899', 'x', '3993', 'O', '3559', '9483', 'q', '5259', '953']
Output (English): O3993x3899J7619482344856827jdrf98633231