Black Sabbath - Meglomania Chords & Tabs

Standard E Tuning
[ Tab from: https://www.guitartabs.cc/tabs/b/black_sabbath/meglomania_tab.html ]
This is the main riff for the most of the song. 
I just figured it out now so I'll change it later if I figure more out.
 

A---------3-X-X---6--X-X---7-7-7-7--X-X-X----7-X-X--6-X-X-----3-3-3
E--0-0----2-X-X---4--X-X---5-5-5-5--X-x-x----5-X-X--4-X-X--0--2-2-2