Task: Program Execution
Input (English): 4, 8, 7, F, 7, 3
Output (English): [['4', '8', '7', 'F', '7'], ['4', '8', '7', 'F', '3'], ['4', '8', '7', '7', '3'], ['4', '8', 'F', '7', '3'], ['4', '7', 'F', '7', '3'], ['8', '7', 'F', '7', '3']]