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))))) (, ,) (S (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 ))))) (, ) (S (ADJP (JJ ) (PP (IN ) (NP (NN )))))))))) (. )))