12-bar Blues

st Riff: 4x = 3 4 (3) 3
2nd Riff: 2x = 4 4 (3) 4
1st Riff: 2x
3rd Riff: 1x = 3 (3) 4 (4)
2nd Riff: 1x
1st Riff: 2x - (and you can do a turnaround riff during the end of this, like a draw on the 4)