Sorry about the really short tab but I have just typed this during an high school lesson
standard tuning -eadgbe
the main riffs are listed here
G Cadd9 D
e---3------ --3------2-----
b-----3---- ---3-------3---
g-------0- x2 ----0---------2
d---------0 -----0-0------- repeated many times
a---------- -3-------------
e-3-------- ----------------
then it is the same string pattern with the bridge
with this cord pattern
G C G C
then it is back to the main riff
G G Cadd9 D
G G Cadd9 D
then the next d chord has an alteration and is to be played s slowly near the D
G G Cadd9 D
--2--2-------
-------3------
------------2
-0-----------
--------------
--------------
then end with a single slow strum of G
Gotta go recess bell went