"Born under a bad sign ..." 
e||------------------------------------------------------------------------| 
B||------------------------------------------------------------------------| 
G||----------3-------------------------3-----------------------------------| 
D||------3-5---5-------3-----------3-5---5-------3-------------------------|
A||--3-5-----------3-5---------3-5-----------3-5---------------------------| 
E||----------------------6-3-----------------------6-3---------------------| 

"If it wasn't for bad luck ..." 
e||----------------------------------------------------------------------| 
B||----------------------------------------------------------------------| 
G||----------5-5-6-5-4-3-3---------------------3-------------------------| 
D||----------4-4-5-4-3-2-2-----------------3-5---5-----------------------| 
A||--2-3-4-5-5-5-6-5-4-3-3-3-5---3-----3-5-------------------------------| 
E||----------------------------6---3-------------------------------------| 

"Hard luck and trouble's ..." 
e||-------------------------------------------------------------------| 
B||-------------------------------------------------------------------| 
G||----------------------------------------------------------3--------| 
D||------3-3-5-------3-3-5-------3-3-5-------3-3-5-------3-5---5-etc--| 
A||--3-5---------3-5---------3-5---------3-5---------3-5--------------| 
E||-------------------------------------------------------------------|

Essa versão, em C, é a que Clapton tocava no Cream. Já o Albert King tocava em F#.