B33113313132313113313223313331323331333131232323132313232213221   >>    B3311331313231311331322331333132333133313123232313231323221322   <<    B33113313132313113313223313331323331333131232323132313232213223   >>      B33113313132313113313223313331323331333131232323132313232213222   >>