Task: Program Execution
Input (English): Q, W, 2, 8, H, 6, u
Output (English): [['Q', 'W', '2', '8', 'H', '6'], ['Q', 'W', '2', '8', 'H', 'u'], ['Q', 'W', '2', '8', '6', 'u'], ['Q', 'W', '2', 'H', '6', 'u'], ['Q', 'W', '8', 'H', '6', 'u'], ['Q', '2', '8', 'H', '6', 'u'], ['W', '2', '8', 'H', '6', 'u']]