i still want my money back . 
(ROOT (S (NP (PRP i)) (ADVP (RB still)) (VP (VBP want) (NP (PRP$ my) (NN money)) (ADVP (RB back))) (. .)))
(ROOT (S (NP (PRP )) (ADVP (RB )) (VP (VBP ) (NP (PRP$ ) (NN )) (ADVP (RB ))) (. )))