What is a trilogy of 6 called?

Could you please clarify for me what exactly you mean by "a trilogy of 6"? Generally speaking, a trilogy refers to a set of three related works, such as books, films, or episodes of a television series. However, the term "trilogy" inherently suggests a set of three, so referring to a "trilogy of 6" seems somewhat contradictory. Perhaps you're asking about a collection of works that are part of a larger series or franchise, but not specifically labeled as a trilogy? Could you provide more context or clarify your question?