Task: Program Execution
Input (English): 5, ['d', 's', '2449', 'W', '7455', 'w', 'B', '2159', '7853', 'M', '6543', '7975', 'b', 'S', 'O', '133']
Output (English): w, B, 2159, 7853, M, 6543, 7975, b, S, O, 133