Though Syllables in this mantra don't have any conceptual this means, they've symbolic connections with unique spiritual characteristics.  The mantras are drawn within the Vairocanābhisaṃbodhi Sūtra. The mantra for each deity title in Japanese, its equal name in Sanskrit, the Sanskrit mantra, plus the Japanese Edition from the Shingon tradition https://www.instagram.com/tantramantraaurvigyaan/