be prepared to cling to the edge of your seat , tense with suspense 
(ROOT (S (VP (VB be) (ADJP (VBN prepared) (S (VP (TO to) (VP (VB cling) (PP (IN to) (NP (NP (DT the) (NN edge)) (PP (IN of) (NP (PRP$ your) (NN seat))))))))) (, ,) (ADJP (JJ tense) (PP (IN with) (NP (NN suspense)))))))
(ROOT (S (VP (VB ) (ADJP (VBN ) (S (VP (TO ) (VP (VB ) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (PRP$ ) (NN ))))))))) (, ) (ADJP (JJ ) (PP (IN ) (NP (NN )))))))