B3311331313231311331322331333132313331323131323223313132313231323132232311   >>    B331133131323131133132233133313231333132313132322331313231323132313223231   <<    B3311331313231311331322331333132313331323131323223313132313231323132232313   >>      B3311331313231311331322331333132313331323131323223313132313231323132232312   >>