This is the main part of the song
|-----------------4-X-X-4-X-X-2-X-4-------|
|--4-6-4----------4-X-X-4-X-X-2-X-4-------|
|---------5-6-5---5-X-X-5-X-X-3-X-5-------|      4x
|-----------------6-X-X-6-X-X-4-X-6-------|
|-----------------6-X-X-6-X-X-4-X-6-------|
|-----------------4-X-X-4-X-X-2-X-4-------|

Then it goes into this part

|-----------------------------------|
|--4-6-4----------44444444-66666666-|
|---------5-6-5---44444444-66666666-|
|-----------------44444444-66666666-|
|-----------------22222222-44444444-|
|-----------------------------------|

Then the Chorus


|-----------------------------------|
|---4--4--4--6--6--6----------------|
|----5--5-----5--5------------------|
|-----6--6-----6--6-----------------|
|-----------------------------------|
|-----------------------------------|

my explanation