This is the position of the norms. As for our saying pure or mixed, the pure is the letter that exists from one element and the mixed one that exists from two elements or more. As for our saying complete or incomplete, then the perfect is the letter that was found due to the completion of its orbital cycle, and the imperfect is the letter that was found due to part of the revolution of its orbit. And a problem occurred to the astronomy that stopped it, so it lost what was giving it the completion of its cycle, like a worm in the animal world that has nothing but the sense of touch, so its food is whoever touches it, like the waw with the qaf and the zay with the nun. As for our saying, it raises the one with which it is connected, we mean every letter, if you understand its secret and are blessed with verification and union, you will be distinguished in the world. Upper