Then detach the lower portion and return to us as soon as possible in the postage-paid envelope.
( Then ( ( ( ( detach ( the ( lower portion ) ) ) and ) ( ( ( return ( to us ) ) ( as ( soon as ) ) ) ( possible ( in ( the ( postage-paid envelope ) ) ) ) ) ) . ) )
(ROOT (S (RB Then) (VP (VP (VB detach) (NP (DT the) (JJR lower) (NN portion))) (CC and) (VP (VP (VB return) (PP (TO to) (NP (PRP us)))) (CONJP (RB as) (RB soon) (IN as)) (VP (ADJP (JJ possible)) (PP (IN in) (NP (DT the) (JJ postage-paid) (NN envelope)))))) (. .)))
If you delay sending us the pre-paid envelope, we cannot accept it.
( ( If ( you ( delay ( ( sending us ) ( the ( pre-paid envelope ) ) ) ) ) ) ( , ( we ( ( ( can not ) ( accept it ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (PRP you)) (VP (VBP delay) (S (VP (VBG sending) (NP (PRP us)) (NP (DT the) (JJ pre-paid) (NN envelope))))))) (, ,) (NP (PRP we)) (VP (MD can) (RB not) (VP (VB accept) (NP (PRP it)))) (. .)))