it rarely stoops to cheap manipulation or corny conventions to do it 
(ROOT (S (NP (PRP it)) (ADVP (RB rarely)) (VP (VBZ stoops) (PP (IN to) (NP (NP (JJ cheap) (NN manipulation)) (CC or) (NP (JJ corny) (NNS conventions)))) (S (VP (TO to) (VP (VB do) (NP (PRP it))))))))
(ROOT (S (NP (PRP )) (ADVP (RB )) (VP (VBZ ) (PP (IN ) (NP (NP (JJ ) (NN )) (CC ) (NP (JJ ) (NNS )))) (S (VP (TO ) (VP (VB ) (NP (PRP ))))))))