# Working with tree sequences <img align="right" width="73" height="45" src="https://raw.githubusercontent.com/tskit-dev/administrative/main/logos/svg/tskit-rust/Tskit_rust_logo.eps.svg">
The next several sections provide examples based on a tree sequence with two trees.
The first tree is:
```md
0
+++
| | 1
| | +++
2 3 4 5
```
The second tree is:
```md
0
+-+-+
1 |
+-+-+ |
2 4 5 3
```