Creational { ◙ Singleton pattern ◙ Factory Pattern ◙ Abstract factory Pattern ◙ Builder pattern ◙ Prototype Pattern } Structural { ◙ Adapter pattern ◙ Composite pattern ◙ Proxy pattern ◙ Flyweghit pattern ◙ Facade pattern ◙ Bridge pattern ◙ Decorator pattern } Behavioral { ◙ Template method pattern ◙ Mediator pattern ◙ Chain of responsibility pattern ◙ Observer patterns ◙ Strategy pattern ◙ Command pattern ◙ State pattern ◙ Visitor pattern ◙ Iterator pattern ◙ Interpreter pattern ◙ Memento pattern ◙ Repository pattern }