B3311331313231311331322331333132322331323331133132322331323132313232212111   >>    B331133131323131133132233133313232233132333113313232233132313231323221211   <<    B3311331313231311331322331333132322331323331133132322331323132313232212113   >>      B3311331313231311331322331333132322331323331133132322331323132313232212112   >>