What are the characters, letters, radicals and radical elements in Mongolian, and according to what grammar? thank

Now there are two common Mongolian languages.

Traditional Mongolian:

Mongolian words are composed of letters, because each word will be connected into a whole (similar to Arabic), and each letter has a word top, middle part and suffix in three ways.

Kirill Mongolian:

Now the Mongolian language 1940 has been put into use. Use Russian letters and add two letters to indicate pronunciation that is not in Russian.

There is also totem Mongolian similar to traditional Mongolian, which is mainly popular in East Asian Mongolian countries such as Xinjiang.