Task: Program Execution
Input (English): 9, f, 1, 8, c, 9
Output (English): [['9', 'f', '1', '8', 'c'], ['9', 'f', '1', '8', '9'], ['9', 'f', '1', 'c', '9'], ['9', 'f', '8', 'c', '9'], ['9', '1', '8', 'c', '9'], ['f', '1', '8', 'c', '9']]