I've thought it well over  "
( I ( 've ( ( ( thought it ) ( well over ) ) '' ) ) )
(ROOT (S (NP (PRP I)) (VP (VBP 've) (VP (VBN thought) (S (NP (PRP it))) (ADVP (RB well) (RB over)) ('' '')))))
I never even gave it much thought. 
( I ( never ( ( even ( ( gave it ) ( much thought ) ) ) . ) ) )
(ROOT (S (NP (PRP I)) (ADVP (RB never)) (VP (ADVP (RB even)) (VBD gave) (NP (PRP it)) (NP (JJ much) (NN thought))) (. .)))