to build up a pressure cooker of horrified awe 
(ROOT (S (VP (TO to) (VP (VB build) (PRT (RP up)) (NP (NP (DT a) (NN pressure) (NN cooker)) (PP (IN of) (NP (VBN horrified) (NN awe))))))))
(ROOT (S (VP (TO ) (VP (VB ) (PRT (RP )) (NP (NP (DT ) (NN ) (NN )) (PP (IN ) (NP (VBN ) (NN ))))))))