Task: Program Execution
Input (English): 6, 9, 6, 6, u, F
Output (English): [['6', '9', '6', '6', 'u'], ['6', '9', '6', '6', 'F'], ['6', '9', '6', 'u', 'F'], ['6', '9', '6', 'u', 'F'], ['6', '6', '6', 'u', 'F'], ['9', '6', '6', 'u', 'F']]