Riff

E ------------------------------------------------
B ------------------------------------------------ 
G ------------------------------------------------
D ------------------------------------------------ 
A --------------3----------------------------------
E --0---3---5-----5---3---0---3/5------------------


Verse

E ------------------------------------------------------------
B ------------------------------------------------------------ 
G ------------------------------5---5---5-5-5-5-5---5-----
D --5---5---5-5-5-5-5---5---4---4---4-4-4-4-4---4----- 
A --4---4---4-4-4-4-4---4---5---5---5-5-5-5-5---5-----
E --5---5---5-5-5-5-5---5---------------------------------

Occasionally throw the riff in at the end of each set and repeat until just before Kelly sings “help me” at which point u start the chorus 

Chorus

E ------------------------------------------------
B ------------------------------------------------ 
G ------------------------------------------------
D ------------------------------------------------                                                           X2
A --------------------(------------3--------------)-----(------------3-------------------)
E --5------4------3--(0---3---5-----5---3---0-)--2--(0---3---5-----5---3---0---3/5)

Let only 5 and 4 in bold ring for four beats and 3 and 2 in bold ring for 2 beats but 
Using the varied riff to fill it up to a four beat bar.

Half way through the song Kelly adds another riff into the chorus before it and then carries on the same

A-----------3--------------------------------
E -2-3-4-5---3-5---------------------------


These are all the parts and it just rotates between them throughout the song