Riff 1
G:
D:
A:3---3---3---3---0-2
E:--3---3---3---3----

Riff 2
G:
D:
A:3---3---33---3---0-2
E:--3---3---33---3----

Riff 3
G:
D:
A:3---33---3---3---0-2
E:--3---33---3---3----

Riff 4
G:
D:
A:3---33---3---3~
E:--3---33---3
so it'll be...
Riff 1 x3
Riff 2 x1
Riff 1 x4
Riff 3 x2
Riff 4 x1

(on riff 4 hold the A:3 untill tom is done sayin' good)

I'm positive it's right up untill Riff 4 but thats the best I can do