riff 1
e-----------------------------------------------|
B-----------------------------------------------|
G-----------------------------------------------|
D-----------------------------------------------|
A-----------------------------------------------|
E--5-553-33-7-773-33----------------------------|
[ Tab from: http://www.guitaretab.com/d/demented-are-go/92576.html ]
riff 2
e-----------------------------------------------|
B-----------------------------------------------|
G-----------------------------------------------|
D-5-4-56----------------------------------------|
A-5-4-56----------------------------------------|
E-3-2-45----------------------------------------|
riff 3
e-----------------------------------------------|
B-----------------------------------------------|
G----5~------4----------------------------------|
D-5--5~---5--4----------------------------------|
A--6-4~----5-2----------------------------------|
E-----------------------------------------------|