B3311331313231311331322331333131133132311233132313331333132312323132323221   >>    B331133131323131133132233133313113313231123313231333133313231232313232322   <<    B3311331313231311331322331333131133132311233132313331333132312323132323223   >>      B3311331313231311331322331333131133132311233132313331333132312323132323222   >>