B3311331313231311331322331333132313232233132313133313231323132313331322221   >>    B331133131323131133132233133313231323223313231313331323132313231333132222   <<    B3311331313231311331322331333132313232233132313133313231323132313331322223   >>      B3311331313231311331322331333132313232233132313133313231323132313331322222   >>