Task: Program Execution
Input (English): b, 8, k, X, P
Output (English): [['b', '8', 'k', 'X'], ['b', '8', 'k', 'P'], ['b', '8', 'X', 'P'], ['b', 'k', 'X', 'P'], ['8', 'k', 'X', 'P']]