list inside nested iterate, but in the same level as list1

[elyes sallem]

Hello
i have an anction form , where i declared two liste
list1 and list2
to loop through liste1 , i used nested:iterate
inside this iterate, i wanna have an access to list2
which is not inside list1, but in the same level as list 1
any one has an idea how can i do this?
if i use nested, it would assume that it is inside list1

the schema is like this
actionForm------ list1
     |------------------list2

Regards
Elyes.