Riff
E---------------------------|     |---------------------------|
B---------------------------|     |---------------------------|
G---------------------------|     |---------------------------|
D--7--7--7--7--10-10-10-10--|x3   |--12-12-12-12-12-12-12-12--|
A--7--7--7--7--10-10-10-10--| then|--12-12-12-12-12-12-12-12--|
E--5--5--5--5--8--8--8--8---|     |--10-10-10-10-10-10-10-10--|

Repeat this riff 3 times and end with
D--7--
A--7--
E--5--