Edge is using a complex echo system, go to http://www.amnesta.net/edge_delay/ for more info.

Heres the tab

First Part:

e-----------------12-12--------------------12-12----------------------------|
B---------------------------------------------------------------------------|
G---------------------------------------------------------------------------|
D-----12-12-11---------------12-12-11---------------------------------------|
A------0--0--0----------------0--0--0---------------------------------------|
E---------------------------------------------------------------------------|

Alternate Between that and

e---------------------------------------------------------------------------|
B-----------------------10-10-----------------------10------10--------------|
G----9-9-7------------------------9-9-7----------7-------7------7-----------|
D----0-0-0------------------------0-0-0-------------------------------------|
A---------------------------------------------------------------------------|
E---------------------------------------------------------------------------|


Then Play
      D
e---------------------------------------------------------------------------|
B--------------3---3---3----------------3---3---3---------------------------|
G------------2---2---2----------------2---2---2-----------------------------|
D----------0------------------------0---------------------------------------|
A---------------------------------------------------------------------------|
E---------------------------------------------------------------------------|

Alternating with

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

Thats it :)