You don't know.
( You ( ( ( do n't ) know ) . ) )
(ROOT (S (NP (PRP You)) (VP (VBP do) (RB n't) (VP (VB know))) (. .)))
You don't know.
( You ( ( ( do n't ) know ) . ) )
(ROOT (S (NP (PRP You)) (VP (VBP do) (RB n't) (VP (VB know))) (. .)))