Riff 1 (Light palm muting on 0's)
E|1-------------------------------------------|
B|2-------------------------------------------|
G|3-------------------------------------------|
D|4-------------------------------------------|
A|5-2-----------5---------------------5/6-5\3-|
6-0-0-0-0-0-0-3-0-0-0-0-0-0-0-0-0-0-3/4-3\1-|

Riff 2 (with half time feel)(Heavier pm on 0's)
E|1-----------------------------------------------------------|
B|2-----------------------------------------------------------|
G|3-----------------------------------------------------------|
D|4-----------------------------------------------------------|
A|5-2-------------5-------------(5)/6-(5)/6-3-----------------|
6-0-0-0-0-0-0-0-3-0-0-0-0-0-0-(3)/4-(3)/4-1-0-0-0-0-0-0-0-0-|

Riff 3 (000 = triplet)
E|1-------------------------------------------------------------|
B|2-------------------------------------------------------------|
G|3-9--------------9-------------12-------------12--------------|
D|4-x--------------x--------------x--------------x--------------|
A|5-7--------------7-------------10-------------10--------------|
E|6--0-000-000-000--0-000-000-000--0-000-000-000--0-000-000-000-|

Riff 4 (Pick the 0's very fast with light palm muting)
E|1--------------------|
B|2--------------------|
G|3--------------------|
D|4--------------------|
A|5--------------4-7-8-|
6-000000000000-4-5-6-|

E|1--------------------------------------------|
B|2--------------------------------------------|
G|3--------------------------------------------|
D|4--------------------------------------------|
A|5----------------------------------------3/4-|
6-0-0-0-0-3~-0-0-0-0-2~0-0-0-0-1~0-0-0-0-1/2-|