Task: Program Execution
Input (English): 4, ['8129', '439', 'b', 'B', '6689', '8177', 'M', '4817', '1129', '5979', '1139', '8479', '7195', '5603', '7749', '6027', 'p', '4897', '2415', '309', '8569', '9253', 'p']
Output (English): 8129, 6689, 1129, 7195, p, 8569