 You went treating!
( You ( ( went treating ) ! ) )
(ROOT (S (NP (PRP You)) (VP (VBD went) (S (VP (VBG treating)))) (. !)))
You went and treated!
( You ( ( ( went and ) treated ) ! ) )
(ROOT (S (NP (PRP You)) (VP (VP (VBD went)) (CC and) (VP (VBD treated))) (. !)))