B3311331313231311331322331333132313231333131323223313231333132323213123231   >>    B331133131323131133132233133313231323133313132322331323133313232321312323   <<    B3311331313231311331322331333132313231333131323223313231333132323213123233   >>      B3311331313231311331322331333132313231333131323223313231333132323213123232   >>