bridge-design-pattern state-design-pattern strategy-design-pattern adapter-design-pattern proxy-design-pattern behavioral-design-patterns prototype-design-pattern singleton-design-pattern decorator-design-pattern observer-design-pattern composite-design-pattern facade-design-pattern mediator-design-pattern factory-method-design-pattern template-method-design-pattern flyweight-design-pattern command-design-pattern chain-of-responsibility-design-pattern abstract-factory-design-pattern iterator-design-pattern