you should have delay or an echo or some type of effect on (not really an expert sorry) 

intro 
e|-12-12(let )--19-19--14-14(let )--7-7(let )--||
B|-13-13(ring)--20-20--15-15(ring)--9-9(ring)--||
G|---------------------------------------------||
D|---------------------------------------------||
A|---------------------------------------------||
E|---------------------------------------------|| 
repeated however many times

after a while it changes to this in the verse
e|-----------------------------------------||
B|-----------------------------------------||
G|-----------------------------------------||
D|----------------12-14p12-------------12--||
A|-14-14-14-14-12----------14-14-14-12-----||
E|-----------------------------------------||

e|----17-------12-14-12--------||
B|-12----12-15----------15-----||
G|-----------------------------||
D|-----------------------------||
A|-----------------------------||
E|-----------------------------||

e|-----------------------------------||
B|-12-13-----12-13----15-13-12-------||
G|-------12--------14----------------||
D|-----------------------------------||
A|-----------------------------------||
E|-----------------------------------||