thoroughly unrewarding all of this 
(ROOT (FRAG (ADJP (RB thoroughly) (JJ unrewarding)) (NP (NP (DT all)) (PP (IN of) (NP (DT this))))))
(ROOT (FRAG (ADJP (RB ) (JJ )) (NP (NP (DT )) (PP (IN ) (NP (DT ))))))