B3311331313231311331322331333132313232233131121113233313232213221   >>    B331133131323131133132233133313231323223313112111323331323221322   <<    B3311331313231311331322331333132313232233131121113233313232213223   >>      B3311331313231311331322331333132313232233131121113233313232213222   >>