B3311331313231311331322331333132313232233132313133313331323133311212131   >>    B331133131323131133132233133313231323223313231313331333132313331121213   <<    B3311331313231311331322331333132313232233132313133313331323133311212133   >>      B3311331313231311331322331333132313232233132313133313331323133311212132   >>