B3311331313231311331322331333132313232233132332132313331333131133131331123111   >>    B331133131323131133132233133313231323223313233213231333133313113313133112311   <<    B3311331313231311331322331333132313232233132332132313331333131133131331123113   >>      B3311331313231311331322331333132313232233132332132313331333131133131331123112   >>