some times instead of the last 5 on E's play:
G|------------------|
D|------------------|
A|-------------4----|
E|--5---7----------|
Riff 2
G|--------------------------|
D|--------------------------|
A|----------------2--2--2-|
E|--3--3--3---------------|
play riffs 1 and 2 again
bridge:
G|---------------------|
D|---------------------|
A|---------------------|
E|---3----5----9----|
play Riff 1 then:
Riff 3
G|--------------------------------|
D|--------------------------------|
A|-----2-------------------------|
E|--3-----5--5--5----4--3---|
G|-------------|
D|-------------|
A|-----7-------|
E|----------7--|
play that until the end.