Commutative, or "semantically palindromic" sentences
Is it crazy how saying sentences backwards creates backwards sentences saying how crazy it is?
Am I as bored as you are? Are you as bored as I am?
The words, intact, are maintained in both directions. The meaning is the same but the words are different:
My first thought was "Listen, you!" It works both ways. It's short and simple (like me.)
Watch this watch
Unless I've misunderstood the question, of course.
EDIT: And in case using the same first and last word is cheating, how about
Path a route (eg. through a maze)
The reverse form still makes sense, just about, I think.
Essentially for an A-B-C structure you'd need pairs of words that are both nouns and verbs, and have the same meaning in both senses. It's an interesting thing to think about.