Task: Program Execution
Input (English): x, 9, A, D, P
Output (English): [['x', '9', 'A', 'D'], ['x', '9', 'A', 'P'], ['x', '9', 'D', 'P'], ['x', 'A', 'D', 'P'], ['9', 'A', 'D', 'P']]