B3311331313231311331322331333132313331323131323223313231232313232311   >>    B331133131323131133132233133313231333132313132322331323123231323231   <<    B3311331313231311331322331333132313331323131323223313231232313232313   >>      B3311331313231311331322331333132313331323131323223313231232313232312   >>