T    T       T    T       T    T    T
E|---12p6---------------------------------------|
B|----------------------------------------------|
G|--------15\12p7-12p7-15/17p7-14p7-14p7-14p7---| x9
D|----------------------------------------------|
A|----------------------------------------------|
E|----------------------------------------------|

After the 9th time, it goes into this part to end the riff:

     T    T    T    T    T    T    T    T
E|---------------------------------------------|
B|---17p6-17p6-17p6-18p6-18p6-18p6-15p6-15p6---|
G|---------------------------------------------|
D|---------------------------------------------|
A|---------------------------------------------|
E|---------------------------------------------|

Obviously, if you didn't get it from the T's above the tab, this is completely tapped. 
The easiest way to accomplish this riff is to have your left hand in this position:

E|--6--|
B|--6--|
G|--7--|
D|--x--|
A|--x--|
E|--x--|