C -- low guitar note alternates from to C to A:

 

intro

  C      C/A 
EADGBE EADGBE 
X3201X X0201X 


   F     F/A 
EADGBE EADGBE
X3321X X0231X 

verse same as intro
 

chorus
 

F G Em Am (3 times)

Bflat Efla