7 acessos
e----------------------------------11- e-------11-------9-----8-------------|
b-9-8-9----9-8-9----9-8-9----9-8-9---- b-9-8-9----9-9-9---9-9---9-9---9-8-9-|
g-------10-------10-------10----------x3g----------------------------10------|
d------------------------------------- d------------------------------------|
a------------------------------------- a------------------------------------|
e------------------------------------- e------------------------------------|