In the fall of 2000, ZNKR newly added two forms named "Sougiri" and "Nukiuchi" also in the tachi waza. So now Seitei Iai consists of twelve forms.
The word "Shoden" can be translated as the "entry-transmission", and was derived from the Omori-ryu Iaido. Omori-ryu was said to have been created by Hayashi Rokudayu Morimasa, the ninth headmaster of the Muso Jikiden Eishin-ryu, who lived from 1661 until 1732. It has been included in the Muso Shinden Ryu at the entry level, and contains the following techniques:
The word "Chuden" can be translated as the "middle-transmission", and was derived from the Hasegawa Eishin-ryu Iaido. Originally created in the seventeenth century by Hasegawa Chikaranosuke Eishin (Hidenobu), who was the seventh undisputed headmaster of the Muso Jikiden Eishin-ryu. Hasegawa Eishin-ryu has been included in the Muso Shinden-ryu at the middle level. It contains the following techniques:
The word "Okuden" can be translated as the "inner-transmission". Nakayama's Oku-iai is divided into two groups, Suwari-waza, and Tachi-waza; sitting and standing techniques.
These are paired kata performed with a bokuto and saya. Simliar to kendo kata, both have an Uchidachi and Shidachi role.
These are paired kata performed with a bokuto and a jo (wooden walking stick). Similar to tachi uchi no kurai, they are practiced by an Uchi and a Shi.The kata consist of 12 slightly modified kata drawn from Shinto Muso-ryu Jōdō including 2 kata created specifically for Seitei Jodo.