Although this is nominally an AABA form, both Lightfoot and JD Crowe (who did a great cover of this song) play fast and loose with that, sticking breaks in, starting vocals on the B part, and generally not being strictly AABA. Still, I've done it as a simple AABA in order to simplify for reading and practice. I also included the A form twice as an intro (like Crowe does it) instead of once, like Lightfoot.
You Are What I Am - Gordon Lightfoot