B3311331313231311331322331333132333132332113313331333133313232233131133111   >>    B331133131323131133132233133313233313233211331333133313331323223313113311   <<    B3311331313231311331322331333132333132332113313331333133313232233131133113   >>      B3311331313231311331322331333132333132332113313331333133313232233131133112   >>