I wrote:

> They each belong to a different node. To distinguish them, the node index **together with the variable** is stored in the list.

Is it correct? How about

> They each belong to a different node. To distinguish them, the node index is stored in the list, **together with the variable**

or even:

> They each belong to a different node. To distinguish them, **together with the variable**, the node index is also stored in the list.

I mean to distinguish two variables with the same name where  each belongs to a different node, the node index is stored together with each variable.


Actually I don't know the position of *together with variable* in this sentence. Should it immediately follows the name with which it comes or it can be after the verb?