These are the main Chords throughout the entire song.
You can figure out the strum pattern

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


This is the riff over the opening chords.
  E|---3--0----------------------------------------|
  B|-----------3--0-----0--------------------------|
  G|-------------------------2-------0--------2----|
  D|---------------------------------------2-------|
  A|-----------------------------------------------|
  E|-----------------------------------------------|


This is the riff you hear over the verse
  E|---------0---------------------3------------------|
  B|------------1---0-----------------3---0-----------|
  G|-------------------2--0----------------------0----|
  D|------2-------------------------------------------|
  A|---0------------------------2---------------------|
  E|-------------------------3------------------------|


This is riff you over the chorus
  E|------------------------------------------------------------------------|
  B|----5s8---------5*s3---------5s8---------10s3---------------------------|
  G|------------------------------------------------------------------------|
  D|------------------------------------------------------------------------|
  A|------------------------------------------------------------------------|
  E|------------------------------------------------------------------------|
        s=slide    *=bend up a little