Task: Program Execution
Input (English): 1, 3, ['f', '7291', '2559', 'a', '9901', '3365', '1507', '5017', '2483', '2887', 'M', 'M', 'C', 's', '111', 'Q', '175', 'y', 'O', '3169', 'a']
Output (English): f, a, 1507, 2887, C, Q, O