Twelve Links in the Three Realms

Those who are born from a womb in the realm of desire contain all twelve links. [It is said that those in] the realm of form have eleven [links]: they have no name-and-form; and [those in] the realm of formlessness have ten: they lack name-and-form and the six senses. However, it can be said that they contain [all twelve]. When all the sense organs first arise in the realm of form, when one has not yet attained cleverness, it is still called “name-and-form.” Though it is said that there is no form in the formless realm, there is still names. One should know that all twelve links are contained [in all three realms].

Foundations of T'ien T'ai Philosophy, p 217-218