Lists are reversed

Hi, everyone.

I have a little problem about list items in dynamo.

First, i was find 25 surfaces from revit element.
As you can see the list is in sequence
but, the last two lists are reversed. i don’t know why?

Does anyone know this problem?

Is this selecting surfaces from the revit model or creating surfaces to go into revit, i have had this issue when one is modeled after the other you need to create in the sequence you want to run.