by cliches , painful improbability and murky points 
(ROOT (PP (IN by) (NP (NP (NNS cliches)) (, ,) (NP (JJ painful) (NN improbability)) (CC and) (NP (JJ murky) (NNS points)))))
(ROOT (PP (IN ) (NP (NP (NNS )) (, ) (NP (JJ ) (NN )) (CC ) (NP (JJ ) (NNS )))))