Drop D tuning

There is no bass in the verses. 

Chorus riff:
G---------------------------------------------------
D---------------------------------------------------
A---------------------------------------------------
D-0---6/5-3-0--7-0-0--3-0--x-x-x-x-3-0--7-0-0--3-0--

Bridge x3
G-----------------------
D-----------------------
A-----------------------
D-0-0-0-0-0-0-0---------   

Then:
G---------------------------------------------------
D---------------------------------------------------
A---------------------------------------------------
D-0---6/5-3-0--7-0-0--3-0--x-x-x-x-3-0--7-0-0--3-0--