to shout insults at the screen 
(ROOT (S (VP (TO to) (VP (VB shout) (NP (NNS insults)) (PP (IN at) (NP (DT the) (NN screen)))))))
(ROOT (S (VP (TO ) (VP (VB ) (NP (NNS )) (PP (IN ) (NP (DT ) (NN )))))))