you want to punch the button and go
( you ( want ( to ( ( ( punch ( the button ) ) and ) go ) ) ) )
(ROOT (S (NP (PRP you)) (VP (VBP want) (S (VP (TO to) (VP (VP (VB punch) (NP (DT the) (NN button))) (CC and) (VP (VB go))))))))
You should go after punching the button.
( You ( ( should ( go ( after ( punching ( the button ) ) ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (MD should) (VP (VB go) (PP (IN after) (S (VP (VBG punching) (NP (DT the) (NN button))))))) (. .)))