Task: Program Execution
Input (English): 7, ['7263', 'A', 'U', '169', 'f', '6397', '8443', '3737', '743', 'w', 'f', '8907', 'R', 'R', '7849', '337', 'K', '2307', 'G', 'U', '5765', '1929', 'Y', '9973', '891', 'U']
Output (English): 7263, 3737, 7849, 1929