probably want to see it twice 
(ROOT (S (ADVP (RB probably)) (VP (VBP want) (S (VP (TO to) (VP (VB see) (NP (PRP it)) (ADVP (RB twice))))))))
(ROOT (S (ADVP (RB )) (VP (VBP ) (S (VP (TO ) (VP (VB ) (NP (PRP )) (ADVP (RB ))))))))