There is already similar post but this one is maybe easier to play and it sounds 
better on acoustic, at least to me..


   C                               Em
E|------------------------------------------------------------------|
B|------------------------------------------------------------------|
G|-----0---0-----------0---0-----------0---0-----------0---0--------|
D|---2---2---2---2---2---2---2---2---2---2---2---2---2---2---2---2--|
A|-3-----------3---3-----------3---2-----------2---2-----------2----|
E|------------------------------------------------------------------|

   Am                              Fmaj7
E|------------------------------------------------------------------|
B|------------------------------------------------------------------|
G|-----2---2-----------2---2-----------2---2-----------2---2--------|
D|---2---2---2---2---2---2---2---2---3---3---3---3---3---3---3---3--|
A|-0-----------0---0-----------0---0-----------0---0-----------0----|
E|------------------------------------------------------------------|


*Fmaj sounds better to me in the intro than F, but you can play it as you like

cheers