B3311331313231311331322331333132313331323131323223313231323132322333321   >>    B331133131323131133132233133313231333132313132322331323132313232233332   <<    B3311331313231311331322331333132313331323131323223313231323132322333323   >>      B3311331313231311331322331333132313331323131323223313231323132322333322   >>