This one is a "little" different 12 bar... has a 2 bar lead in... then the next full 3 have a stop on the 12 bar, and the rest are pretty straight forward....
https://soundcloud.com/jd-1/12bar-b00000000-mp3/s-1b8K5
https://soundcloud.com/jd-1/12bar-b00000000-mp3/s-1b8K5