- Strategy Pattern : 1/7
- Observer Pattern : 1/7
- Decorator Pattern : 1/9
- Factory Pattern : 1/9
- Abstract Factory Pattern : 1/10
- Singleton Pattern : 1/10
- Command Pattern : 1/14
- Adapter Pattern : 1/14
- Facade Pattern : 1/14
- Template Method Pattern : 1/14
- Iterator Pattern
- State Pattern