Task: Program Execution
Input (English): 8, ['D', '5709', '1693', 'z', '5489', 'o', '5491', 'R', 'x', '3587', '1819', 'x', 't', '2223', '3219', '8237']
Output (English): x, 3587, 1819, x, t, 2223, 3219, 8237