Task: Program Execution
Input (English): 6, 15, ['7089', '2133', 'U', '9711', 'x', 'a', '2603', 'm', 'w', '6447', '9719', 'v', '2499', '8771', '1493', 'O', '2861', 'O', '8541', 's']
Output (English): 394117789942v91797446wm3062a