Embryo Tab

E|--------------------
B|3--3--3--3-3-3-3-3-3
G|--------------------
D|0--2--3--2-0-2-3-2-0
A|--------------------
E|--------------------

E|----------------------
B|--3--3--3--3-3-3-3-3-3
G|-----0--2--0---0------  
D|2/3----------3---3-2-0
A|----------------------
E|----------------------
[ Tab from: http://www.guitartabs.cc/tabs/b/black_sabbath/embryo_tab.html ]
E|--------------------
B|3--3--3--3-3-3-3-3-3
G|2--0----------------
D|------3--2-0-2-3-2-0
A|--------------------
E|--------------------

E|----------------------
B|333--3--3--3-3-3-3-3-3
G|----------------------
D|0-0--2--3--2-0-2-3-2-0
A|-3--------------------
E|----------------------

E|
B|
G|
D|12--10--7--10--5-7-3-2-0
A|
E|


Something like that.. Maybe tuning a lower key
or something.. Well someone tab it full!