his collaborators ' symbolic images with his words , 
(ROOT (NP (NP (NP (PRP$ his) (NNS collaborators) (POS ')) (JJ symbolic) (NNS images)) (PP (IN with) (NP (PRP$ his) (NNS words))) (, ,)))
(ROOT (NP (NP (NP (PRP$ ) (NNS ) (POS )) (JJ ) (NNS )) (PP (IN ) (NP (PRP$ ) (NNS ))) (, )))