Task: Program Execution
Input (English): 7, 13, ['x', '3977', 'J', '6309', '2693', 'V', 'x', '5859', 'K', '529', 'Z', '4105', '1349', '7511', '9045', 'M', 'W', '207', '8039', 'f', '597', '2041', 'P', 'e', 'E', '9163', '1549', '5005', 'N', '1175']
Output (English): 13494105Z529K5859x