B3311331313231311331322331333132313232233132322223313231333131232311   >>    B331133131323131133132233133313231323223313232222331323133313123231   <<    B3311331313231311331322331333132313232233132322223313231333131232313   >>      B3311331313231311331322331333132313232233132322223313231333131232312   >>