D|----------------------------------------------------------------------|
A|----------------------------------------------------------------------|
F|----------------------------------------------------------------------|
C|------3-----3---------4-----4---3-----3-----3---------6-----6---------| 
G|--1-1---1-1---1-------------------4-4---4-4---4-----------------1-----|
D|----------------2-2-2---2-2---2-----------------4-4-4---4-4---4-------|
(play many times)

Riff1
D|----------------------------------------------------------------------|
A|----------------------------------------------------------------------|
F|-3-3-3-3-3-3-3-3-----------------6-6-6-6-6-6-6-6----------------------|
C|-3-3-3-3-3-3-3-3-4-4-4-4-4-4-4-4-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6-6------|
G|-1-1-1-1-1-1-1-1-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-4-6-6-6-6-6-6-6-6------|
D|-----------------2-2-2-2-2-2-2-2-----------------4-4-4-4-4-4-4-4------|
(play many times)

This is all I have for now, it's my first tab, so there may be some mistakes. It sounds correct to me, hope it is correct! Have fun!