stoops to cheap manipulation or corny conventions 
(ROOT (S (VP (VBZ stoops) (PP (IN to) (NP (NP (JJ cheap) (NN manipulation)) (CC or) (NP (JJ corny) (NNS conventions)))))))
(ROOT (S (VP (VBZ ) (PP (IN ) (NP (NP (JJ ) (NN )) (CC ) (NP (JJ ) (NNS )))))))