Task: Program Execution
Input (English): 8, 9, y, 8, P, 4, 2
Output (English): [['8', '9', 'y', '8', 'P', '4'], ['8', '9', 'y', '8', 'P', '2'], ['8', '9', 'y', '8', '4', '2'], ['8', '9', 'y', 'P', '4', '2'], ['8', '9', '8', 'P', '4', '2'], ['8', 'y', '8', 'P', '4', '2'], ['9', 'y', '8', 'P', '4', '2']]