Task: Program Execution
Input (English): 1, 8, ['x', 'r', '9751', '4475', 'X', '6141', 'C', '9639', '4489', '9601', '7587', '159', '5331', 'D', '9059', 'F', '2083', '9751', '1987', 'P', '9453', 'o', '8457', 'E']
Output (English): x, 4489, 2083