Drum intro then...

verse 1
----------------------------|
----------------------------|
----------------------------|
----3-5-----3-3-5-----5/----|

the 3-3-5 is repeated x 3

verse 2
-----------------------------|
-----------------------------|
----3-5-----3-3-5------5/----|
-----------------------------|

3-3-5 is repeated x3 here too

order is...

verse 1
verse 2
verse 1
verse 2

then...

verse 3
------------------------------|
------------------------------|
----3-3-----3-3-3-------------|
------------------------------|

3-3--3 is repeated x3

verse 4
-------------------------------|
-------------------------------|
----1-1---1---1-1-1---1---1-1--|
-------------------------------|

then all this↑↑ is also the verses to the song and is repeated again ONCE in 
intro once Anthony Green starts singing