Here is the intro, played throughout verses

F           C            Gm
-------------------------3--
-------------------------3--
---------------0-----0---3--   5x
--3-3-3p20-------0h2-----5--
-----------3-3-----------5--
-------------------------3--

Pre-Chorus
  C   D   Bbm  
----------------------------
----------------------------
--5---7--------------------- 2x   then    
--5---7---8-----------------
--3---5---8-----------------
----------6-----------------
   A  G
D--7--5------------------------
A--7--5------------------------
E--5--3------------------------

Verse 2 - same as chorus

Pre-Chorus

Chorus chord composition

F   C   Gm    4x

Verse 3

Pre-Chorus

Chorus 

Intro

Pre-chorus

Chorus 3x