makes piecing the story together frustrating difficult 
(ROOT (S (VP (VBZ makes) (S (S (VP (VBG piecing) (NP (DT the) (NN story)) (ADVP (RB together)))) (ADJP (JJ frustrating) (JJ difficult))))))
(ROOT (S (VP (VBZ ) (S (S (VP (VBG ) (NP (DT ) (NN )) (ADVP (RB )))) (ADJP (JJ ) (JJ ))))))