LISP: A dynamic car

I have a complex list of lists and want something to check the second element of every list of the list in the loop, any supported features like this?

>>8
I just want to see the second one then determine place the word before and after it under a list of that "word"

like list a-kind-of would have (lintel wedge) (post1 brick) and i need to evaluate the second member of the list to determine where i put them though

I hope i'm making sense, kind of brain dead right now