For most of the song the main riff is this
e|---------------------------------------------------------------------------|B|---------------------------------------------------------------------------|G|---------------------------------------------------------------------------|D|---------------------------------------------------------------------------|A|--10h12-10---------------8--8-8-8-----12p11p10-10---------------8-8-8-8----|E|-----------10-10-7h8-10---------------------------10-10--7p8-10------------|
The riff changes around the chourse|---------------------------------------------------------------------------|B|---------------------------------------------------------------------------|G|---------------------------------------------------------------------------|D|--10/12--------------------------------------------------------------------|A|---------10--7h8h10--------------------------------------------------------|E|---------------------7h8h10------------------------------------------------|