Bass vocals part
G|------------------------/-------------------------------|
D|-----------------2-----/------------------2-------------|
A|--3--3---3-------5----/---3--3---3--------5-------------|
E|--------------3--------/--------------3-----------------|

then keyboards comes in…
this is just a repeated C chord for verse

E|-----0-----|
B|-----1-----|
G|-----0-----|
D|-----2-----|
A|-----3-----|
E|-----0-----|

then vocal break between verses…

E|---1---0---1---0---1---0---1---0---1---0---1---0---1---0---1---3-------|
B|-----------------------------------------------------------------------|
G|-----------------------------------------------------------------------|
D|-----------------------------------------------------------------------|
A|-----------------------------------------------------------------------|
E|-----------------------------------------------------------------------|

Chorus

On keyboard this is just…

   Am          F             C          C
E|-----0-----/----1-----/----0---/-----0-----|
B|-----1-----/----1-----/----1---/-----1-----|
G|-----2-----/----2-----/----0---/-----0-----|
D|-----2-----/----3-----/----2---/-----2-----|
A|-----0-----/----3-----/----3---/-----3-----|
E|-----0-----/----1-----/----0---/-----0-----|

bass is
G|----------------------------------------------------------------------------|
D|----------------------------------------------2----------------------2------|
A|--------------------------------3--3---3------5-------3--3---3-------5------|
E|-5---5---5---5---1---1---1---1-------------3-----------------------3--------|

E|------------------|
B|-------------------------------|
these are all the parts you need…
and the structure is fairly easy to work out