Intro (x2)
G----------------------------------------------|
D----------------------------------------------|
A-5-------------------------5555---------------|
E--------------------------------222233333333--|
Verse (x2)
G------------------------------------------------|
D------------------------------------------------|
A-5-55-55-55-00-00-00-00-22-22-22-22-------------|
E-----------------------------------33-33-33-33--|
[ Tab from: https://www.guitartabs.cc/tabs/a/avril_lavigne/girlfriend_btab_ver_2.html ]
Pre-Chorus (x1)
G-------------------------------------|
D-------------------------------------|
A-------------------------------------|
E-7-7-7-7--2-2-2-2--5-5-5-5--3-3-3-3--|
Chorus (x2)
G-------------------------------------------|
D-------------------------------------------|
A-55------55------55------5555--------------|
E---557733--557733--557733----222233333333--|
Bridge (x3) (at the end of 3rd time only)
G----------------------|-------------------|
D----------------------|-------------------|
A--5-------------------|-5555--------------|
E----------------------|-----222233333333--|
Intro x2
verse x2
pre-chorus x1
chorus x2
verse x2
pre-chorus x1
chorus x2
Bridge x3
chorus x3