B3311331313231311331322331333132322331323111133133313231323131323111   >>    B331133131323131133132233133313232233132311113313331323132313132311   <<    B3311331313231311331322331333132322331323111133133313231323131323113   >>      B3311331313231311331322331333132322331323111133133313231323131323112   >>