Did you go door to door?
( ( ( Did you ) ( go ( door ( to door ) ) ) ) ? )
(ROOT (SQ (VBD Did) (NP (PRP you)) (VP (VB go) (ADVP (NN door) (TO to) (NN door))) (. ?)))
I know you didn't go door to door.
( I ( ( know ( you ( ( did n't ) ( go ( door ( to door ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP know) (SBAR (S (NP (PRP you)) (VP (VBD did) (RB n't) (VP (VB go) (ADVP (NN door) (TO to) (NN door))))))) (. .)))