There was an answer here June 2011 by Kosmonout stating,
So, x did not become ght. Instead, both of these words came from a language that existed about 5000 years ago; during those 5000 years, the pronunciations of the words changed many times.
I want to know what this 5,000-year-old language was, the culture, and in what area of the world the language was spoken, and what was the meaning of the word ght? Thank you! This is my first time to use this site, so if i'm not clear on how it is does please explain. Thank you.