1. Data Structure Tree
+---------------------------+ Data Structure +----+
| + |
| +-+-> List |
| | | |
| Tuple <--------+ +-+ append |
| | | |
| Dictionary <------+ +-+ extend |
| | | |
| Set <--+------+ +-+ insert |
| | | |
| union +-+ +-+ remove |
| | | |
| intersection +-+ +-+ pop |
| | | |
| difference +-+ +-+ clear |
| | | |
| symmetric difference +-+ +-+ index |
| | |
| +-+ count |
| | |
| +-+ sort |
| | |
| +-+ reverse |
| | |
| +-+ copy |
| |
+-----------------------------------------------------+