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 - [Link](https://refactoring.guru/design-patterns/catalog)
 
-## Table of Content
+Design patterns are typical solutions to common problems
+in software design. Each pattern is like a blueprint
+that you can customize to solve a particular
+design problem in your code.
+
+## Benefits of patterns
+
+Patterns are a toolkit of solutions to common
+problems in software design. They define
+a common language that helps your team
+communicate more efficiently.
+
+## Classification
+
+Design patterns differ by their complexity, level of
+detail and scale of applicability. In addition,
+they can be categorized by their intent
+and divided into three groups.
+
+### [Creational Patterns](creational/README.md)
+
+- [Factory Method](creational/factory-method/README.md)
+- [Abstract Factory](creational/abstract-factory/README.md)
+- [Builder](creational/builder/README.md)
+- [Prototype](creational/prototype/README.md)
+- [Singleton](creational/singleton/README.md)
+
+### [Structural Patterns](structural/README.md)
+
+- [Adapter](structural/adapter/README.md)
+- [Bridge](structural/bridge/README.md)
+- [Composite](structural/composite/README.md)
+- [Decorator](structural/decorator/README.md)
+- [Facade](structural/facade/README.md)
+- [Flyweight](structural/flyweight/README.md)
+- [Proxy](structural/proxy/README.md)
 
-- [Creational Patterns](creational/README.md)
-  - [Factory Method](creational/factory-method/README.md)
-  - [Abstract Factory](creational/abstract-factory/README.md)
-  - [Builder](creational/builder/README.md)
-  - [Prototype](creational/prototype/README.md)
-  - [Singleton](creational/singleton/README.md)
-- [Structural Patterns](structural/README.md)
-  - [Adapter](structural/adapter/README.md)
-  - [Bridge](structural/bridge/README.md)
-  - [Composite](structural/composite/README.md)
-  - [Decorator](structural/decorator/README.md)
-  - [Facade](structural/facade/README.md)
-  - [Flyweight](structural/flyweight/README.md)
-  - [Proxy](structural/proxy/README.md)