no i i just painted
( ( no ( i i ) ) ( just painted ) )
(ROOT (X (NP (DT no) (FW i) (FW i)) (SBAR (RB just) (S (VP (VBD painted))))))
I didn't just paint. 
( I ( ( ( ( did n't ) just ) paint ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD did) (RB n't) (ADVP (RB just)) (VP (VB paint))) (. .)))