This 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----|