Intro:

This part is normally done by bass but can be done by guitar
|---------------------------------|
|---------------------------------|
|---------------------------------|
|---------------------------------|
|---------------------------------|
|-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-5-|

Verse:

 Part a  |---------------------------|
         |---------------------------|
         |---------------------------| 3 times
         |---7----------10-----------|
         |-----7------------10-------|
         |-5-----5-5-5-8-------8-8-8-|

then after the third time

 part b  |-------------------------------|
         |-------------------------------|
         |-------------------------------|
         |---9------------12-------------|
         |-----9-------------12----------|
         |-7-----7-7-7-10-------10-10-10-|

the last verse (the one just before each the chorus) changes so that part b is played

|-------------------------|
|-------------------------|
|-------------------------|
|---9-----------8---------|
|-----9-----------8-------|
|-7-----7-7-7-6-----6-6-6-|

Chorus:

|------------------|
|------------------|
|------------------| three times
|-77777-1010101010-|
|-77777-1010101010-|
|-55555--8-8-8-8-8-|
then after the third time

|-------------|
|-------------|
|-------------|
|-99999-88888-|
|-99999-88888-|
|-77777-66666-|

this part comes after every chorus and at the end of the song

|---------------|
|---------------|
|---------------| three times
|-7777-10101010-|
|-7777-10101010-|
|-5555--8-8-8-8-|

after the third time

|-----------|
|-----------|
|-----------|
|-9999-8888-|
|-9999-8888-|
|-7777-6666-|

this part comes pretty much at the end

|--------------------------------------------------
|--------------------------------------------------
|--------------------------------------------------
|-7777-----------10101010-----------7777-----------
|-7777-----------10101010-----------7777-----------
|-5555-5-5-5-5-5--8-8-8-8-8-8-8-8-8-5555-5-5-5-5-5-

------------------------|
------------------------|
------------------------|
-10101010---------------|
-10101010---------------|
--8-8-8-8-8-8-8-8-10-10-|

im pretty sure this is all correct. Just listen to the song to find out where everything goes and how it is played.