B3311331313231311331322331333132313232233132332132313331333132213231323221   >>    B331133131323131133132233133313231323223313233213231333133313221323132322   <<    B3311331313231311331322331333132313232233132332132313331333132213231323223   >>      B3311331313231311331322331333132313232233132332132313331333132213231323222   >>