here is the strumming pattern :
o = play
x = mute
↓ = strum downward
↑ = strum upward
they’re broken into sixteenths
↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ( 8 beats )
oxxxoxxoxxxxxxxoxoxooxoxoxxxxxxx ( repeat )
for those who can subdivide think these in your head :
1e+a2e+a3e+a4e+a1e+a2e+a3e+a4e+a

chords :

intro :
E F# E F# ( 6x )

verse :
E F# E F# ( 4x )

pre – chorus :
A G# C#m F#
F#m G#

chorus :
E F# E F# ( 3x )
G#

instrumental :
E F# E F# ( 2x )

verse :
E F# E F# ( 4x )

pre – chorus :
A G# C#m F#
F#m G#

chorus :
E F# E F# ( 3x )
G# ( repeat chorus )

instrumental :
G#m muted for 16 measures then
E F# E F# ( 4x )

pre – chorus :
A G# C#m F#
F#m G#

chorus :
E F# E F# ( 3x )
G# ( repeat chorus )

ending :
G#