Listen to the record for the time.

Standard Tuning: EBGDAE

Fig.1 starts after some vocal, keyboard, drums and bass only part
 but i
think that there's some kind of acoustic riff under the keyboard.
           
Fig.1
|--------------|-----------|
|--------------|-----------|
|-----------6--|*-6--6--6-*|  Repeat x 8
|--7--4--6--6--|*-6--6--6-*|  On the last time let the last chord ring.
|--7--4--6--4--|--4--4--4--|
|--5--2--4--4--|--4--4--4--|

When you'll let ring that chord Cristina enters, and under her voice
there's a super heavy chord with the palm muting before the song goes into the chorus.
                                                     
|-------------|
|-------------|
|----------6--|  As before let the chord ring.  
|----------6--|
|----4-4-4-4--|
|----4-4-4-4--|
p.m. _____ 

Chorus
|--------------|--------------|--------------|--------------|
|--------------|--------------|--------------|--------------|
|-----------6--|-----------6--|-----------6--|-----------7--|
|--7--4--6--6--|--7--4--6--6--|--7--4--6--6--|--7--4--6--7--|
|--7--4--6--4--|--7--4--6--4--|--7--4--6--4--|--7--4--6--5--|
|--5--2--4--4--|--5--2--4--4--|--5--2--4--4--|--5--2--4--5--|

Fig.2
|---------------|
|---------------|
|*-6---6--6--6-*|  Repeat x 15 (On the 12th repeat the super heavy chord)
|*-6---6--6--6-*| 
|--4---4--4--4--|
|--4---4--4--4--|

Then repeat Fig.1, Chorus and then

Fig.3
|-----------------|                                          |-----|
|--7--6-----------|                                          |-----|
|*-6--5--4--7--6-*|x 4, end with this chord, let it ring     |--6--|       
|*-4--3--4--7--6-*|                                          |--6--|
|--------2--5--4--|                                          |--4--|
|-----------------|                                          |--4--|
 
Then, after the beginning's no guitar bit play Chorus x 2.

Symbols:

p.m.______: Palm Muting