Suppose I have the following dict object:

```
test = {}
test['tree'] = ['maple', 'evergreen']
test['flower'] = ['sunflower']
test['pets'] = ['dog', 'cat']

```

Now, if I run `test['tree'] + test['flower'] + test['pets']`, I get the result:

```
['maple', 'evergreen', 'sunflower', 'dog', 'cat']

```

which is what I want.

However, suppose that I'm not sure what keys are in the dict object but I know all the values will be lists. Is there a way like `sum(test.values())` or something I can run to achieve the same result?