the passive-aggressive psychology of co-dependence 
(ROOT (NP (NP (DT the) (ADJP (JJ passive) (HYPH -) (JJ aggressive)) (NN psychology)) (PP (IN of) (NP (NN co-dependence)))))
(ROOT (NP (NP (DT ) (ADJP (JJ ) (HYPH ) (JJ )) (NN )) (PP (IN ) (NP (NN )))))