B3311331313231311331322331333132322331312121111331323132313232212111   >>    B331133131323131133132233133313232233131212111133132313231323221211   <<    B3311331313231311331322331333132322331312121111331323132313232212113   >>      B3311331313231311331322331333132322331312121111331323132313232212112   >>