Task: Program Execution
Input (English): 4, 5, ['1559', '737', '2373', '8943', '5661', '1895', 'X', '9789', 'H', 'N', '1281', 'd', 'O', '7861', '4793', '3647', 'a', '9549', '9559', 'X', 'R']
Output (English): 8943, H, 7861, 9559