Task: Program Execution
Input (English): 7, ['T', 'B', 'K', '5709', 'O', '8351', '9731', 'q', 'N', 'z', '2307', 'u', '8187', '2681', 'N', '7713']
Output (English): T, B, K, 5709, O, 8351, 9731