yeah and crawl through it
( ( yeah and ) ( crawl ( through it ) ) )
(ROOT (S (VP (VP (VB yeah)) (CC and) (VP (VB crawl) (PP (IN through) (NP (PRP it)))))))
I understand that I have to crawl through
( I ( understand ( that ( I ( have ( to ( crawl through ) ) ) ) ) ) )
(ROOT (S (NP (PRP I)) (VP (VBP understand) (SBAR (IN that) (S (NP (PRP I)) (VP (VBP have) (S (VP (TO to) (VP (VB crawl) (PRT (RP through)))))))))))