Task: Program Execution
Input (English): 6, ['P', '689', 'l', 'C', 'y', 'D', 'q', 'J', '2279', 'U', 'l', 'R', '1513', '8581', '7995', 'p', 'Y', '2951', '3537', '939', '3441', '3789', 'L', '2109', '6683', 'p']
Output (English): P, q, 1513, 3537, 6683