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1. Abstract Factory - Provide an interface for creating families of related or dependent objects without specifying their concrete classes.
2. Builder - Separate the construction of a complex object from its representation so that the same construction process can create different representations.
3. Factory - Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses.
1. Bridge - Decouple an abstraction from its implementation so that the two can vary independently.
2. Composite - Compose objects into tree structures to represent whole-part hierarchies. Composite lets clients treat individual objects and compositions of objects uniformly.
1. Command - Encapsulate a request as an object, thereby letting you parameterise clients with different requests, queue or log requests, and support undoable operations.
2. Chain of Responsibility - Avoid coupling the sender of a request to its receiver by giving more than one object a chance to handle the request. Chain the receiving objects and pass the request along the chain until an object handles it.