Crossfire - Stevie Ray Vaughn

  main riff:
G|-------------------------------|
D|----------------------------2--|
A|------2-4-4--2-4-4--2-4-2-4----|
E|0-0-4--------------------------|

the chorus is played as this twice: (middle of the song)
G|-----------------|
D|----4-4-----6-6--|
A|-----------------|
E|2-2-----4-4------|

after the first chorus, this main riff variation is played 
G|------------11-13---------------------|
D|---------------------11----11---------|
A|------2-4-4-------13----13----13-9-11-|
E|0-0-4---------------------------------|