This is the pattern for the verse and chorus:

e|-------------------------------------------------------|
B|-------------------------------------------------------|
G|-------------------------------------------------------|
D|--5-5-5-5----/14-14-14-14-----5-5-5----/14-14-14-14--|       
A|--5-5-5-5----/14-14-14-14-----5-5-5----/14-14-14-14--|
E|--3-3-3-3----/12-12-12-12-----3-3-3----/12-12-12-12--|
    Yeah...     wall           Yeah...      wall

e|--------------------------------------------------------|
B|--------------------------------------------------------|
G|--------------------------------------------------------|
D|---10-10-10-10-----5-5-5-5-----10-10-10-10----5-5-5-5---|
A|---10-10-10-10-----5-5-5-5-----10-10-10-10----5-5-5-5---|
E|--\8--8--8--8------3-3-3----/8--8--8--8-----3-3-3---|
    But I'm happy   I'm happy   I'm happy     I'm happy


Repeat above for the rest of the song until "And even when you're gone...", which is:

e|-------------------------------------------------------|
B|-------------------------------------------------------|
G|-------------------------------------------------------|
D|--10-10-10-10----5-5-5-5-----10-10-10-10----5-5-5-5----|
A|--10-10-10-10----5-5-5-5---- 10-10-10-10----5-5-5-5----|
E|--8--8--8--8-----5-5-5----/8--8--8--8-----5-5-5----|


Repeat until end, finish on G (355XXX).