Man Overboard - I Saw Behemoth And It Ruled Tabs

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                                        I Saw Behemoth And It Ruled - Man Overboard
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Well, this is the first time I ever tabbed something by myself. I worked hard on
the intro, but I know it's not perfect yet. I think it kinda sounds somewhat like 
the actual song. It may need to be on higher strings or played with other strings,
I don't know. I just really want to know how to play this song. Please, someone 
good at guitar comment on this or edit it themselves trying to fix the song. Also, 
I need help with the chords, but mainly the intro riff. 

As said before, this is my first tab ever, and I know it's not perfect, so someone 
good at guitar help me. Please and thank you! (:

e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|---7---7-6-7-6---4-3-4-6-2---3-4-6---4---4-3-4--6-7--4-6-7-6-4-6-----------|
A|---------------------------------------------------------------------------|
E|---------------------------------------------------------------------------|

e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|---------------------------------------------------------------------------|
D|---7---7-6-7-9---4-6-7-9-7-6-7---4--4-3-4---2-1---3-4--3-2-3---------------|
A|---------------------------------------------------------------------------|
E|---------------------------------------------------------------------------|

e|---------------------------------------------------------------------------|
B|---------------------------------------------------------------------------|
G|----4--------3--------4--------7-------------------------------------------|
D|----4--------3--------4--------7-------------------------------------------|
A|----2--------1--------2--------5-------------------------------------------|
E|---------------------------------------------------------------------------|