Task: Program Execution
Input (English): B, 9, 3, 4, 6, e
Output (English): [['B', '9', '3', '4', '6'], ['B', '9', '3', '4', 'e'], ['B', '9', '3', '6', 'e'], ['B', '9', '4', '6', 'e'], ['B', '3', '4', '6', 'e'], ['9', '3', '4', '6', 'e']]