accessing list of lists elements by index

Hello,
I have a question about lists of lists.
How exactly do i reference an element at a certain index.

Code (CSharp):

1. for(int i = 0; i < allLists.Count; i++)
2.         {
3.             for(int x = 0; i < allLists[i].Count; x++)
4.             {
5.                 if(allLists[i][x].message == message)
6.                 {
7.                     path.Add(i);
8.                     path.Add(x);
9.                 }
10.             }
11.         }

I wouldve thought it would look something like this.
But its throwing me an ArgumentOutOfRangeException.
I did some searching on StackOverflow but the solutions there dont seem to apply to my situation or maybe I didnt find the right solution.
Can someone maybe help me out and show me how to access this the right way.
Note that I need to keep track of at which index the searched item is at.

 

You have a typo on line 3. It should be:

Code (CSharp):

1.  for(int x = 0; x < allLists[i].Count; x++)

 

Thank you,
hahaha S*** happens ¯\_(ツ)_/¯