Tuning =  i.e. tuning on 2nd = A  goes up to B
               tuning on 4th = G goes down to F#
e
B
F#
D
B
E

Part 1:
---------------------------------------------------------------|
---------------------------------------------------------------|
--------8----------8--------------------8----------8-----------|
--9-9--90----9-9--90--------------9-9--90----9-9--90-----------|
--0-0--0-----0-0--0---------------0-0--0-----0-0--0------------|
---------------------------------------------------------------|


Part 2:
---------------------------------------------------------------|
--------------------12-12---------------------------12-12------|
--------8------------0--0---------------8------------0--0------|
--9-9--90----9-9--9-12-11---------9-9--90----9-9--9-12-11------|
--0-0--0-----0-0--0---------------0-0--0-----0-0--0------------|
---------------------------------------------------------------|


Part 3:
---------------------------------------------------------------|
--------------------11-11-8-7------------------------11-11-8-7-|
--------8-------------------------------8----------------------|
--9-9--90----9-9--9---------------9-9--90----9-9--90-----------|
--0-0--0-----0-0--0---------------0-0--0-----0-0--0------------|
---------------------------------------------------------------|

Alternates between each part throughout the song (sometimes add an open E as a bass note 
as the already open B)
go on you tube and look at the thom yorke plays clock live video to get an idea of the 
etc