Not sure this is what you want but three
sets of 12 bar blues.
| C . . . | . . . . | . . . . | . . . . |
| F . . . | . . . . | C . . . | . . . . |
| G . . . | F . . . | C . . . | . . . . |
----------------------------------------------------
| C7 . . . | . . . . | . . . . | . . . . |
| F7 . . . | . . . . | C7 . . . | . . . . |
| G7 . . . | F7 . . . | C7 . . . | . . . . |
-----------------------------------------------------
| C . . . | F . . . | C . . . | . . . . |
| F . . . | . . . . | C . . . | . . . . |
| G . . . | F . . . | C . . . | . . . . |
1 set of 16 bar -------------------------------------
| C . . . | . . . . | . . . . | . . . . |
| F . . . | . . . . | C . . . | . . . . |
| G . . . | F . . . | G . . . | F . . . |
| G . . . | F . . . | C . . . | . . . . |
Not expert here, but hope that helps.
If they are helpful wrong key, let me know
and will setup key you want.
Additional information...Go down towards page bottom.
http://en.wikipedia.org/wiki/Twelve-bar_bluesAnd a bit more...
http://how-to-play-blues-guitar.com/blues-concepts/blues-chord-progressions-and-variations/Have fun...