we all lose track of ourselves by trying 
(ROOT (S (NP (NP (PRP we)) (NP (DT all))) (VP (VBP lose) (NP (NN track)) (PP (IN of) (NP (PRP ourselves))) (PP (IN by) (S (VP (VBG trying)))))))
(ROOT (S (NP (NP (PRP )) (NP (DT ))) (VP (VBP ) (NP (NN )) (PP (IN ) (NP (PRP ))) (PP (IN ) (S (VP (VBG )))))))