The Fundamental primordial beej mantra is “om”, it is the mantra from which all the other mantras have been born. Every single beej mantra has a particular god or goddess connected with them. The categories of beej mantras are— Yog beej mantra, Tejo beej mantra, Shanti beej mantra, and Raksha https://www.youtube.com/watch?v=7yoEpl90KUg