B3311331313231311331322331333132313232233132313133313331323132313221121231   >>    B331133131323131133132233133313231323223313231313331333132313231322112123   <<    B3311331313231311331322331333132313232233132313133313331323132313221121233   >>      B3311331313231311331322331333132313232233132313133313331323132313221121232   >>