B33113313132313113313223313331311331333132332132322133313223111   >>    B3311331313231311331322331333131133133313233213232213331322311   <<    B33113313132313113313223313331311331333132332132322133313223113   >>      B33113313132313113313223313331311331333132332132322133313223112   >>