Gone chords by Left Alone

Tuning: Standard (E A D G B E)

Key: E

Difficulty: Novice

The entire song goes:
E   B   C#m   A B
However, the strumming and chord shape changes, depending on the part of the song. In the verse, the chords
are played on the off-beat as upstroke ska skanks and the are played as ska chords:,
   E   B   C#m   A  B
e|-4---7----9----5--7-----------------------|
B|-5---7----9----5--7-----------------------|
G|-4---8----9----6--8-----------------------|
D|------------------------------------------|
A|------------------------------------------|
E|------------------------------------------|

In the pre-chorus, the chords are played both as skanks, and as continuos power chords on the A-string:
   E   B   C#m   A  B
e|------------------------------------------|
B|------------------------------------------|
G|-9---4----4----2--4-----------------------|
D|-9---4----4----2--4-----------------------|
A|-7---2----4----0--2-----------------------|
E|------------------------------------------|

In the chorus the chords are long and distorted and are played only as power chords.

In the part of the song, that I have chosen to call "build-up\