Note:  I don't know this is 100% correct  cuz I made it out of my head 
But it sounds oke 2 me  :->
Greetz Erwin

Riff #1
G-----------------------------------------------------------------
D-----------------------------------------------------------------
A------------------444----------------222--111--------------------
E-444--000----444---------444--000--------------------------------

Riff #2
G-----------------------------------------------------------------
D-----------------------------------------------------------------
A-------------222-------------------------------------------------
E-444--000---------222--------------------------------------------

Riff #3
G-----------------------------------------------------------------
D-----------------------------------------------------------------
A--444\--------444\-------444\--222-1-----------------------------
E--------444/--------444/-----------------------------------------

Riff #4
G-----------------------------------------------------------------
D-----------------------------------------------------------------
A-------4-------------------------------------------4-------------
E-0-----------4------2------------0-----2-----4-------------------