Can you name the main behavioral patterns in software system design?

Main behavioral design patterns help organize interactions between objects and define behavior algorithms. They include:

• Observer — allows objects to subscribe to events of another object and receive notifications about changes.
• Strategy — defines a family of algorithms, encapsulates each one, and makes them interchangeable.
• Command — encapsulates a request as an object, allowing parameterization of clients with different requests.
• Iterator — provides a way to access elements of a collection sequentially without exposing its internal representation.
• State — allows an object to change its behavior when its internal state changes.
• Mediator — centralizes communication between objects, reducing coupling.

These patterns help make the code more flexible and maintainable.