Task: Program Execution
Input (English): 3, 7, ['a', '4721', 'E', '8823', '1837', 'S', '6987', 'r', '3089', 'D', '4281', 'm', '147', 'S', 'P', '9627', 's', '6771', '4351', 'Y', 'v', 'p', 'q', 'H']
Output (English): E, D, s, H