Since there were no bass tabs with four strings I thought I'd give it a shot ^.^

Drop D Tuning

Intro:
G|------------------|
D|------------------|
A|------------------|
D|--3~-3~-0~-0~-23~-|

Pre-Chorus:
G|-----------------|-----------------|----------------------|
D|-----------------|-----------------|----------------------|
A|-----------------|-----------------|-----------------3----|
D|-8-8-8-8-8-8-8-8-|-0-0-0-0-0-0-0-0-|-3-3-3-3-3-3-3-3---2~-|

Chorus:
G|---------------------|----------------------|
D|---------------------|----------------------|
A|-------------33333x--|----------------------|
D|-77777-33333-------5-|-77777-33333-00005-2~-|

Bridge:
G|---------------------------------|
D|---------------------------------|
A|-2-2-2-2-2-2-2-2-----------------|
D|-----------------0-0-0-0-0-0-0-0-|