is from the live version I heard on the Nirvana Box which came out recently.
it may be different to the album version, this sounds 100% correct if you listen to the CD.
G---------------------------------|
D---------------------------------|
A---------------------------------|
E-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0---|
Chorus (quiet part)
G-----------------------------|
D-----------------------------|
A---3---3---2-------2-------2-| Play once then
E-1---1---3---0---0---0---0---|
G----------------------------------|
D----------------------------------| x7
A---3---3-------2-------2-------2--|
E-1---1---3---1---0---0---0---0----
|