you to scratch a hole in your head 
(ROOT (NP (NP (PRP you)) (SBAR (S (VP (TO to) (VP (VB scratch) (NP (DT a) (NN hole)) (PP (IN in) (NP (PRP$ your) (NN head)))))))))
(ROOT (NP (NP (PRP )) (SBAR (S (VP (TO ) (VP (VB ) (NP (DT ) (NN )) (PP (IN ) (NP (PRP$ ) (NN )))))))))