B3311331313231311331322331333132313331323131323223313232213231323221   >>    B331133131323131133132233133313231333132313132322331323221323132322   <<    B3311331313231311331322331333132313331323131323223313232213231323223   >>      B3311331313231311331322331333132313331323131323223313232213231323222   >>