Task: Program Execution
Input (English): 1, 5, ['B', 'r', '9979', '3439', 'K', '2955', '8483', '5991', '4215', '5203', '7039', '7955', 'F', '5143', 'C', 'x', '1433', 'D', 'Q', '8005', 'X']
Output (English): B, 2955, 7039, x, X