Nested bullet lists
```
% pandoc -f html -t markdown
^D
- L1
- L2
- L3.1
- L3.2
- L4
```
Nested ordered lists
```
% pandoc -f html -t markdown
- L1
- L2
- L3.1
- L3.2
^D
1. L1
2. L2
1. L3.1
2. L3.2
```
Ordered list nested below an unordered list
```
% pandoc -f html -t markdown
^D
- L1
- L2
1. L3.1
2. L3.2
```