The door did not budge.
( ( The door ) ( ( ( did not ) budge ) . ) )
(ROOT (S (NP (DT The) (NN door)) (VP (VBD did) (RB not) (VP (VB budge))) (. .)))
The door didn't move. 
( ( The door ) ( ( ( did n't ) move ) . ) )
(ROOT (S (NP (DT The) (NN door)) (VP (VBD did) (RB n't) (VP (VB move))) (. .)))