Task: Program Execution
Input (English): 19, 21, ['o', 'U', '8633', '2419', 'D', '9589', '3007', 'n', '635', '4263', '5979', '165', '7859', 'U', '497', 'B', 'W', 'p', 'c', '5149', '3625', '8737', '7663', 'w', '5729', '1117', 'L']
Output (English): 3625, 5149, c