Task: Program Execution
Input (English): 1, 4, ['1049', 'm', 'm', 'p', '9135', '6797', 'Q', '1011', 'Y', 'w', '5009', '5565', 'n', 'J', '9455', 'a', 'C', 'B']
Output (English): 1049, 9135, Y, n, C