Vv Brown - Shark In The Water Intro Chords & Tabs

trying to work out this song.

listened to the black cab sessions acoustic version ... http://www.youtube.com/watch?v=DHEmnlWE0N4

on the piano the root chords of the song are

Eb    Cm    Cm aug5    Fsus4

worked out the intro

just this repeatedly picked for the intro and the first verse

E|--------------------------|
B|--------------------------|
G|-----9-----9-----9-----9--|
D|--------------------------|
A|--7-----7-----7-----7-----|
E|--------------------------|

E|----------------------------------|
B|----------------------------------|
G|------12------12------12------12--|
D|----------------------------------|
A|--10------10------10------10------|
E|----------------------------------|
[ Tab from: https://www.guitartabs.cc/tabs/v/vv_brown/shark_in_the_water_intro_tab.html ]
E|----------------------------------|
B|----------------------------------|
G|------13------13------13------13--|
D|----------------------------------|
A|--11------11------11------11------|
E|----------------------------------|

E|------------------------------|
B|------------------------------|
G|-----10-----10-----10-----10--|
D|------------------------------|
A|--8------8------8------8------|
E|------------------------------|

then i get stuck when the chords kick in for the first chorus.

Cm deffos sounds right for the 2nd chord but im not sure about Eb as the first and the 
and fouth are giving me difficulties.

if anyone can look at the chords i worked out on the piano and make better sense of it 
can you email me cos i really want the chords :)

iflyoverkitchencity@hotmail.com

cheers!