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 was large and easy to move through. 
( ( The window ) ( ( was ( ( ( large and ) easy ) ( to ( move through ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN window)) (VP (VBD was) (ADJP (JJ large) (CC and) (JJ easy) (S (VP (TO to) (VP (VB move) (PRT (RP through))))))) (. .)))