DESIGN PATTERNS ON KWIC

I am looking for a freelancer to develop a design pattern for Key Word in Context (KWIC) using both Graphical User Interface (GUI) and Command-line. The design pattern must utilize the Abstract Factory, Singleton, Builder, and Prototype patterns and must be capable of processing text-based inputs. The project should allow for easy implementation of code and follow good coding practices. The design pattern should also be flexible enough to accommodate changes and additional features as requested. The freelancer should be experienced in designing user-friendly interfaces and be committed to producing a final product of the highest quality.