How To: Play "When You're Gone" by Avril Lavigne on guitar

Learn how to play "When You're Gone" by Avril Lavigne on the guitar.
Chords:
Intro: C9, Em7, D
Verse: G (G9), D, Em7, C9, D(Dsus4)
Bridge "When you walk away..": Am, G, C9, D
Chorus: C9, Em7, D, Am, C, G, D, C9, D
Outro/Last bridge "We never.. I keep forever..": Bm, C, G, D, B, Em , C, A, D
Strumming: Depends if the chord is played during 2 times (1,2) or 4 times (1,2,3,4). If you count the time/tempo.
1- Down, Down Down Up (1, 2)
2- D, D, UUD, DUDU [or D,DUUD,DDU](1, 2, 3, 4)

VERSE: On G to D(the first one), strum: D,DDU. On Em7, C9, D(the last one), strum: D,D, UUD, DUDU

FIRST BRIDGE: On each chord, strum: D, D,UUD, DUDU

CHORUS: On C(the first one) strum D, DUU. Then on Em, strum D, DUDU. On D, strum: D, D, UUD, DUDU.
On Am, strum: D, DDU. On C, strum: D, D, UUD, DUDU. Same thing for the end of the chorus.

OUTRO/LAST BRIDGE: On each chord (except D to B), strum: D,D,UUD,DUDU

Or if you want to change strumming:

On Bm, C, G, strum only: D, D, UUD, DUDU. On D and B strum D, DDU. For the end, I mean for the chords Em, C, A, D strum on each chord: D(D), DDU (twice)