'I don't suppose you could forget I ever said that?'
( ' ( I ( ( ( ( do n't ) ( suppose ( you ( could ( forget ( I ( ever ( said that ) ) ) ) ) ) ) ) ? ) ' ) ) )
(ROOT (S ('' ') (NP (PRP I)) (VP (VBP do) (RB n't) (VP (VB suppose) (SBAR (S (NP (PRP you)) (VP (MD could) (VP (VB forget) (SBAR (S (NP (PRP I)) (ADVP (RB ever)) (VP (VBD said) (NP (DT that))))))))))) (. ?) ('' ')))
I hope that you can remember that forever. 
( I ( ( hope ( that ( you ( can ( ( remember that ) forever ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP hope) (SBAR (IN that) (S (NP (PRP you)) (VP (MD can) (VP (VB remember) (NP (DT that)) (ADVP (RB forever))))))) (. .)))