Riff 1 is the main riff played during the first two verses:
(E*) (A9*) (D*) (A4*) E|------X-----------X----------X----X-------| B|-----12----------12---------15---14-------| G|-----13----------14---------14---14-------| D|-----14----------14---------12---12-------| A|------------------------------------------| E|------------------------------------------|
Riff 2 is played during the pre-chorus. This might not be the exact timming, but it's easy to figure it out if you listen to the song.
means to slide down and / means to slide up.
Be careful when playing the A5 position, because your index finger is also on the 3rd string and this one isn't involved in the slides.
Riff 2
E5 E|-------------------------------------------------------------------------| B|----17-17-17-17-17-----17-17-17-17-17-----17-17-17-----17-17-17-17-------| G|----16-16-16-16-16-----16-16-16-16-16-----16-16-16-----16-16-16-16-------| D|----14-14-14-1413-/14-14-14-14-1413-/14-14-1413-/14-14-14-14-14-------| A|-------------------------------------------------------------------------| E|-------------------------------------------------------------------------|
A5 E|-------------------------------------------------------------------------| B|----17-17-17-17-17-----17-17-17-17-17-----17-17-17-----17-17-17-17-------| G|----14-14-14-14-14-----14-14-14-14-14-----14-14-14-----14-14-14-14-------| D|----14-14-14-1413-/14-14-14-14-1413-/14-14-1413-/14-14-14-14-14-------| A|-------------------------------------------------------------------------| E|-------------------------------------------------------------------------|
Riff 3 is played during the chorus. Bono sings "Oooh, oooh...", while the Edge sings "Ultra violet... Ultra violet...":
E B
E|----12-----12-----12-----12-----12------------1211----------------------| B|-----9-h10p-9-h10p-9-h10p-9-h10p-9-h10p9---------------------------------| G|-----9------9------9------9------9----------11---------------------------| D|-----9------9------9------9------9-----------9---------------------------| A|-------------------------------------------------------------------------| E|-------------------------------------------------------------------------|
C#m A
E|-----9------9------9------9------9------------------12-------------------| B|-----9-h10p-9-h10p-9-h10p-9-h10p-9-h10p----------------10----------------| G|-----9------9------9------9------9----------------9-------9--------------| D|----11-----11-----11-----11-----11-------------11------------------------| A|---------------------------------------------0---------------------------| E|-------------------------------------------------------------------------|
Finally, Riff 4 is played during the third verse instead of Riff 1:
E|------------------------------------------------------10p9---------------| B|----12p9----9----------12p9----9-----------12p10-9h10------12-10---------| G|---------11---9-------------11---9---------------------------------------| D|--9------------------9-------------------9-------------------------------| A|-------------------------------------------------------------------------| E|-------------------------------------------------------------------------|
That's it!. Now let's see it all together:
(Intro. This goes with keyboards and a pre-recorded guitar. At the end, Edge plays Fill 1.)
E Sometimes I feel like I don't know Fill 1 E G#m E|----------------------| Sometimes I feel like checking out B|----------------------| Dbm G|----------------------| I wanna get it wrong D|----------------------| F# A|-1---3--/4----/8------| Can't always be strong E|----------------------| Fill 1 And love it won't be long
|