I went on through, unlocked the window and left.
( I ( ( ( ( ( ( ( went on ) through ) , ) ( unlocked ( the window ) ) ) and ) left ) . ) )
(ROOT (S (NP (PRP I)) (VP (VP (VBD went) (PRT (RP on)) (PP (IN through))) (, ,) (VP (VBD unlocked) (NP (DT the) (NN window))) (CC and) (VP (VBD left))) (. .)))
The window shaft was unlocked on the way out. 
( ( The ( window shaft ) ) ( ( was ( unlocked ( on ( ( the way ) out ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN window) (NN shaft)) (VP (VBD was) (VP (VBN unlocked) (PP (IN on) (ADVP (NP (DT the) (NN way)) (IN out))))) (. .)))