<s>[INST] So, I have a set of ordered pairs [(1,2), (2,3), (3,4), (4,5)].

My goal is to refer to any given ordered pair based on its index in the list.

The problem is that, in the list, given its indexing [[(1,2), 0], [(2,3), 1], [(3,4), 2], [(4,5), 3]], ordered pairs (1,2), (2,3), (3,4), and (4,5) have indices 0, 1, 2, and 3 respectively.

However, through my code, I am only able to assign the indices as [[(1,2), 1], [(2,3), 2], [(3,4), 3], [(4,5), 4]].

I am getting an error when I try to access any ordered pair with an index as I have written it.

Is there any way I can assign the index value of each ordered pair to match the list format (ex. [(1,2), 0], [(2,3), 1], etc.)?[/INST]