Mute the strings with the bottom of index.  Hold the 9 throughout begining with index 
ring finger manipulating the 11.  Keep the other strings muted.


e|--x--------------------------x------------------------------|
B|--x--------------------------x------------------------------|
G|--x--------------------------x------------------------------|
D|--x--------------------------x------------------------------|
A|--9h-11-11-11--9h-11-9h-11-9-9h-11-11-11--9h-11-9h-11-9-----|
E|--0--0--0--0---0--0--0--0--0-0--0--0--0---0--0--0--0--0-----|


e|--x--------------------------x------------------------------|
B|--x--------------------------x------------------------------|
G|--x--------------------------x------------------------------|
D|--9h-11-11-11--9h-11-9h-11-9-9h-11-11-11--9h-11-9h-11-9-----|
A|--0--0--0--0---0--0--0--0--0-0--0--0--0---0--0--0--0--0-----|
E|--0--0--0--0---0--0--0--0--0-0--0--0--0---0--0--0--0--0-----|

repeat as neccesary

chorus:
e|------------------------------------------------------------|
B|-------------------------------------3---1-----2------------|
G|------7---5---3-----3---2----------------------2------------|
D|--2-------------------------2----2---4---2-----2-----2------|
A|--2---x---x---x-----x---x---2----2---5---3-----------2------|
E|------7---6---4-----4---2-----------------------------------|


its as simple as that.  have fun.  it was fun figuring it out.