Drop your E and A string down: D#,G#,D,G

Intro/verse/chorus and solo - yes near enough the whole song is this riff
G|----------------------------|
D|----------------------------|
A|----------------------------|
E|-2-2-5-2--2--2-2-2-2-5-2----|

Pre-chorus

G|-------------------------------------------------------------|
D|-------------------------------------------------------------|
A|--3-3-3-3-3--5-5-5-5-5--7-7-7-7-7--8-8-8-8-8--10-10-10-10-10-|
E|-------------------------------------------------------------|


G|---------------------------------|
D|---------------------------------|
A|--12-12-12-12-12--15-15-15-15-15-|
E|---------------------------------|


and thats the whole song :D