Unordered list:

- foo

Empty unordered list:

-

Ordered list:

1. bar

Empty ordered list:

1.

Heading:

# my heading

Empty heading:

#

Indented code block:

    print("Hi!")

Empty indented code block:

    

Fenced code block:

```python
print("Hello world!")
```

Empty fenced code block:

```

```