Task: Program Execution
Input (English): 8, ['U', '209', '5725', '5113', '5825', 'y', 'L', 'x', 'Y', 'p', 'K', 'P', 'S', 'L', '8475', 'D', '8009', '6113', 'M', '2171', '5605', 'y', '2051', '8153', '4007', '4507', 'i', '135', 'm', '877', '3497']
Output (English): U, Y, 8009, 4007