Album:Never Say Die(1978)
Tuning:EADG
Tabber:Justin van Uum

Intro
G--------------------------------------------------|
D--------------------------------------------------|
A-----0-2-R-----0-2-R-----0-2-R-222222222222222222-|
E-0-22------0-22------0-22-------------------------|

Main Riff(It's also played during the solo,but only the half of the solo,
because then Geezer plays the chorus)You must feel the groove.
G---------------------------------------------------|
D---------------------------------------------------|
A-2-22-22-22-22-22-22----0-2-22-22-22-22-22-22----02|
E--------------------0-22---------------------0-22--|

Chorus(Oh,it's a hard road)
G-----------------------------------------9999999---|
D---------------------------------------------------|
A-2-22-22-22-22-22-22-0-00-00-00--------------------|
E-------------------------------4-44-44-44----------|

This is played one time during the fade out.
G--16161616161616161616-|
D-----------------------|
A-----------------------|Back to chorus
E-----------------------|

I can't say how the song is  pieced together.
Just Piece it together,it are just 4 riffs in a song of 6 minutes.
Enjoy!!!