can depress you about life itself 
(ROOT (S (VP (MD can) (VP (VB depress) (NP (PRP you)) (PP (IN about) (NP (NP (NN life)) (NP (PRP itself))))))))
(ROOT (S (VP (MD ) (VP (VB ) (NP (PRP )) (PP (IN ) (NP (NP (NN )) (NP (PRP ))))))))