B3311331313231311331322331333132313232233132332132313331333132313211221   >>    B331133131323131133132233133313231323223313233213231333133313231321122   <<    B3311331313231311331322331333132313232233132332132313331333132313211223   >>      B3311331313231311331322331333132313232233132332132313331333132313211222   >>