B3311331313231311331322331333132322331313231211113313231323132322331   >>    B331133131323131133132233133313232233131323121111331323132313232233   <<    B3311331313231311331322331333132322331313231211113313231323132322333   >>      B3311331313231311331322331333132322331313231211113313231323132322332   >>