Task: Program Execution
Input (English): 3, 4, ['565', '3309', 'q', '2139', 'u', '1423', 'k', 'J', '7397', 'X', 'x', '7979', 'l', 'E', 'P', '7179', '8005', 'Z', '1231', '3213', '1831', '3563', 'U', '8453', 'U', '353', 'W', '2957', '8671', '1757']
Output (English): q, k, x, P, 1231, U, W