If you're sad
 

[Riff 1]:
 
E|------------------------------------------------------|
B|------------------------------------------------------|
G|----------------7-6-----------------------------------|
D|-6--7--6--7--6--5-4-7-6-6-6-6-7-6-6-6-6-7-6-6-6-6-4-2-|
A|-4--5--4--5--4------5-4-4-4-4-5-4-4-4-4-5-4-4-4-4-2-0-|
E|------------------------------------------------------|
  [x4]  [x4]  [x5]
 
[Riff 2]:
 
E|-----------|
B|-----------|
G|-----------|
D|-9--11--12-|
A|-7--9---10-|
E|-----------|
 
[Riff 3] (Bass):
 
G|-------------------------------|
D|-------------------------------|
A|---7---5-7---9---10-10-10-9-10-|
E|-------------------------------|
   [x12]     [x12]
 
[Riff 4] (Semi-clean guitar):
 
E|-------------------------|
B|-------------------------|
G|------11------11------11-|
D|-9-10----9-10----9-10-10-|
A|-------------------------|
E|-------------------------|