Dos caras de una moneda

E|-----------------------------------------------------|
B|-----------------------------------------------------|
G|-----------------------------------------------------|
D|-----------------------------------------------------|
A|-2-4-5-5---2-4-5--5-5-2-2-4-5---5--5-5-4--4-4-2------|
E|-----------------------------------------------------|

E|-----------------------------------------------------|
B|-----------------------------------------------------|
G|-----------------------------------------------------|
D|-----------------2-4-0--0-4-2-2-2--2-2---------------|
A|-2-4-5-5---2-4-5-----------------------4-2-----------|
E|-----------------------------------------------------|