Intro:

Gb--------------------------------|
Db--------------------------------|
Ab-----------------555555---------|
Eb-15/-22222222222--------000 57--|

Verse:

Gb--------------------------|
Db--------------------------|
Ab----------555555----------|
Eb--2222222--------000000---|

Pre-Chorus:

Gb------------------------------------------------------|
Db------------------------------------------------------|
Ab--5555555555-----------555555555-7777777777-----------|
Eb-------------222222222----------------------5-7—-|

Chorus:

Gb--------------------------------|
Db--------------------------------|
Ab--------55555-------------------|
Eb--22222-------00000-00000-5-7---|

i'm not sure about the tuning. i figured it out in flat, but it could be in standard.