That's how Danny Jones plays it, I don't know what exactly are these chords, but that's it.

Tuning: DAEF#AE

 Riff intro
E |-------------|
a |-2-3-4-3-0---|
F#|-3-3-3-3-3---|
E |-------------|
A |-------------|
D |-------------|

cHORDS:
       I   II  III IV  V
   E |-0---0---0---0---0---|
   A |-2---0---5---0---0---|
   F#|-3---0---0---2---2---|
   E |-0---0---5---0---0---|
   A |-----4---5-------0---|
   D |-----4---0-------2---|

Song:

Intro
Verse (I, II, III, I) 2x
Chorus (IV V II III V)
Intro
Verse (I, II, III, I) 2x
Chorus (IV V II III V)
Intro
Instrumental (IV V II I IV V II III V)
Bridge (I, II, III, I)