This tab is 100% accurate of how they play it.

Intro
G|--------------------------------|
D|--------------------------------|
A|----7777----7777----------------|
E|0000----0000----7777777788888888|

Verse
G|--------------------------------|
D|--------------------------------|
A|--------------------------------|
E|00000000000000007777777788888888|

Variation
G|--------------------------------|
D|----2020----2420----------------|
A|----------------2222222233333333|
E|0000----0000--------------------|

Variation #2
G|--------------------------------|
D|----2020----2420----4444--------|
A|----------------2222----33333333|
E|0000----0000--------------------|

Chorus
G|----------------------------------------------------------------|
D|----5555----5555--------------------5555----5555----------------|
A|----------------2222222255555555----------------7777777755555555|
E|3333----3333--------------------3333----3333--------------------|

Chorus Variation
G|--------------------------------|
D|--------------------------------|
A|33333333333333335555555555555555|
E|--------------------------------|

Ending Note
G|-|
D|-|
A|-|
E|3|

Songflow:
Intro x 2
Variation x 1
Intro x 1
Verse x 4
Intro x 2
Verse x 2
Variation x 1
Verse x 1
Chorus x 2
Intro x 2
Verse x 2
Variation #2 x 1
Verse x 1
Chorus x 2
Chorus Variation x 1
Verse x 1
Variation x 1
Chorus x 2
Ending note.