Task: Program Execution
Input (English): 1, 7, ['G', 'B', 'l', 'z', '6883', 'N', '7763', '4149', '9829', 'f', 'q', '1911', 'R', '4409', 'u', '2375', 'p', 'V', '1471', 'B', '3395', 'x', 'X']
Output (English): G, 4149, u, x