Task: Program Execution
Input (English): 4, ['E', 'D', 'F', '2895', '4977', 'E', '9723', 'Q', '2047', 'U', '8315', 'H', 'T', 'q', '3713', 'o', 'R', 's', '1777']
Output (English): E, D, F, 2895