B3311331313231311331322331333132313232233132332132313331333131133132331211   >>    B331133131323131133132233133313231323223313233213231333133313113313233121   <<    B3311331313231311331322331333132313232233132332132313331333131133132331213   >>      B3311331313231311331322331333132313232233132332132313331333131133132331212   >>