Creational Patterns
  Abstract Factory 	Creates an instance of several families of classes
  Builder 	Separates object construction from its representation
  Factory Method 	Creates an instance of several derived classes
  Prototype 	A fully initialized instance to be copied or cloned
  Singleton 	A class of which only a single instance can exist

Structural Patterns
  Adapter 	Match interfaces of different classes
  Bridge 	Separates an object’s interface from its implementation
  Composite 	A tree structure of simple and composite objects
  Decorator 	Add responsibilities to objects dynamically
  Facade 	A single class that represents an entire subsystem
  Flyweight 	A fine-grained instance used for efficient sharing
  Proxy 	An object representing another object

Behavioral Patterns
  Chain of Resp. 	A way of passing a request between a chain of objects
  Command 	Encapsulate a command request as an object
  Interpreter 	A way to include language elements in a program
  Iterator 	Sequentially access the elements of a collection
  Mediator 	Defines simplified communication between classes
  Memento 	Capture and restore an object's internal state
  Observer 	A way of notifying change to a number of classes
  State 	Alter an object's behavior when its state changes
  Strategy 	Encapsulates an algorithm inside a class
  Template Method 	Defer the exact steps of an algorithm to a subclass
  Visitor 	Defines a new operation to a class without change