B33113313132313113313223313331323133313232133313113313232212111   >>    B3311331313231311331322331333132313331323213331311331323221211   <<    B33113313132313113313223313331323133313232133313113313232212113   >>      B33113313132313113313223313331323133313232133313113313232212112   >>