B3311331313231311331322331333132323133313232233133311221123121121   >>    B331133131323131133132233133313232313331323223313331122112312112   <<    B3311331313231311331322331333132323133313232233133311221123121123   >>      B3311331313231311331322331333132323133313232233133311221123121122   >>