This is the lead part. There are a few different riffs but you can get the hang of the structure

Riff 1: (You let out ....)

e|-10-8-7-8----10-8-17-19-20-----------------------------|
B|-------------------------------------------------------|
G|-------------------------------------------------------|
D|-------------------------------------------------------|
A|-------------------------------------------------------|
E|-------------------------------------------------------|


Riff 2: (...knows about)

e|-15----------------------------------------------------|
B|----12-13----------------------------------------------|
G|-------------------------------------------------------|
D|-------------------------------------------------------|
A|-------------------------------------------------------|
E|-------------------------------------------------------|


Riff 3: (Why d'you keep a lock ...)

e|----15-------------------------------------------------|
B|-17----------------------------------------------------|
G|-------------------------------------------------------|
D|-------------------------------------------------------|
A|-------------------------------------------------------|
E|-------------------------------------------------------|


Riff 4: (Electronic synthy effect - can be played two ways)

e|-------2-7-5-------------------------------------------|
B|-0-2-3-------------------------------------------------|
G|-------------------------------------------------------|
D|-------------------------------------------------------|
A|-------------------------------------------------------|
E|-------------------------------------------------------|

                            OR

e|-------------------------------------------------------|
B|---------5-3-------------------------------------------|
G|-------4-----------------------------------------------|
D|-2-4-5-------------------------------------------------|
A|-------------------------------------------------------|
E|-------------------------------------------------------|