Task: Program Execution
Input (English): 12, 15, ['J', '4019', 'n', '8751', '4407', '9595', 'U', 'V', 'a', 'E', '2161', '1323', '1131', '1409', '6959', 'y', '2823']
Output (English): 6959, 1409, 1131, 1323