Task: Program Execution
Input (English): 7, ['x', '3903', '6135', 'P', 'E', '927', 'A', '7135', '675', 'A', '7233', '5835', '6357', 'M', '1909', 'G', 'f', '7049', '8715', '2803', '3967', '5631']
Output (English): x, 7135, 1909, 5631