Task: Program Execution
Input (English): 3, n, 7, 5, u, f
Output (English): [['3', 'n', '7', '5', 'u'], ['3', 'n', '7', '5', 'f'], ['3', 'n', '7', 'u', 'f'], ['3', 'n', '5', 'u', 'f'], ['3', '7', '5', 'u', 'f'], ['n', '7', '5', 'u', 'f']]